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Natural Diamond Wholesale Pricing — How Rapaport, Discounts, and Margins Actually Work

A new jewellery brand receives its first serious wholesale natural-diamond quote.

The specification is familiar:

1.00 ct Round Brilliant
G Colour
VS2 Clarity
Excellent Cut
GIA report

But the quotation does not simply say:

Wholesale price: €X.

Instead, the supplier writes:

Rap -18

or:

18 back

or:

-18% Rap.

For somebody entering the trade for the first time, this language can feel unnecessarily complicated.

It is not.

It is part of a pricing framework used across the professional natural-diamond market.

The important point, however, is that Rapaport is a benchmark—not the final transaction price.

Rapaport describes its Price List as an international benchmark used by diamond professionals to evaluate and negotiate prices. The list reflects Rapaport’s opinion of high cash asking prices for qualifying diamonds rather than a record of completed transactions. It is currently published weekly and is organised primarily by diamond size, Colour and Clarity.

That distinction is critical.

If a supplier says:

“This stone is 20 back,”

that does not tell you by itself whether the diamond is a good purchase.

Two stones can have:

the same Carat,

the same Colour,

the same Clarity,

the same report laboratory,

and even the same Rap discount,

yet one may be significantly more attractive commercially.

Why?

Because wholesale natural-diamond pricing is affected by much more than the three variables shown in a Rapaport matrix.

Cut quality matters.

Proportions matter.

Fluorescence matters.

Measurements matter.

The issuing laboratory can matter.

Visual appearance matters.

Current market demand matters.

Availability matters.

And perhaps most importantly:

the price at which comparable diamonds can actually be sourced today matters.

For jewellery retailers, designers and brands, understanding this difference can prevent two expensive mistakes:

paying too much for a weak diamond because its discount looks attractive,

or rejecting an excellent diamond simply because another supplier quoted a larger percentage “off Rap.”

For Dalila Diamonds, transparent B2B pricing should therefore mean more than showing a percentage.

The strongest wholesale approach is to help trade buyers understand:

the benchmark,

the actual asking price,

comparable market supply,

the quality adjustments behind the price,

and how the stone fits the retailer’s own margin strategy.

Quick Answer: How Does Diamond Wholesale Pricing Work?

Natural diamond wholesale pricing often starts with a benchmark such as the Rapaport Price List, but actual dealer prices are negotiated above or below that benchmark according to the individual stone and current market. A quote of “Rap -20” means the asking price is 20% below the relevant Rapaport reference value. However, the real buying decision should also consider Cut, proportions, fluorescence, grading laboratory, visual quality, market comparables, availability, payment terms and the retailer’s expected resale margin.

The key rule is:

Rapaport gives you a reference point. The market tells you what the diamond is actually worth today.

What Is the Rapaport Price List?

The Rapaport Price List is one of the best-known pricing references in the professional natural-diamond trade.

Rapaport says the list was established in 1978 and is used by diamond dealers as a benchmark for comparing and negotiating diamond prices.

The current list is organised by:

shape,

Carat range,

Colour,

and Clarity.

For example, a buyer might look at the matrix for:

1.00–1.49 ct Round diamonds

and then locate:

G Colour

VS2 Clarity.

That cell provides a benchmark price per Carat.

But this is where beginners often make their first mistake.

The number is not necessarily what a dealer should pay.

Rapaport explicitly states that the Price List represents high cash asking prices for well-cut diamonds meeting its criteria, not actual completed transaction prices.

Rapaport List Price vs Actual Market Price

Pricing ConceptWhat It MeansRapaport ListBenchmark referenceRap discount/premiumPosition relative to benchmarkDealer asking priceSupplier’s actual offerMarket comparable priceSimilar diamonds currently offeredNegotiated trade priceFinal agreed wholesale priceRetail selling pricePrice charged to end customer

These numbers should never be treated as interchangeable.

How to Read a Rapaport Quote

Suppose the relevant Rapaport reference is:

$8,000 per carat

for a hypothetical 1.00 ct diamond category.

The diamond weighs:

1.00 ct

At full Rap:

$8,000

If the supplier quotes:

Rap -20

the calculation is:

$8,000 × 80%

$6,400

If the stone weighs:

1.10 ct

and the applicable reference remains:

$8,000 per Carat,

the full Rap value is:

$8,800.

At -20%:

$7,040.

The concept is straightforward once you understand the notation.

What Does “Rap -20” Mean?

Rap -20 means 20% below the Rapaport reference price.

Other common trade language includes:

20 back

-20

20 off Rap

All usually refer to the same basic idea.

A positive number would indicate pricing above the benchmark, although premiums are less common in ordinary commercial colourless-diamond trading.

Why Is the Discount More Important Than the List Price?

Because buyers often compare similar stones by how far they trade away from the benchmark.

For example:

DiamondRap PositionStone A-15%Stone B-22%Stone C-30%

At first glance, Stone C looks cheapest.

But that may be misleading.

Perhaps Stone C has:

strong fluorescence,

poor proportions,

a less preferred grading report,

an unattractive inclusion,

or weak visual performance.

The deeper discount may be compensating for a weaker stone.

Bigger Discount Does Not Automatically Mean Better Value

This is perhaps the single most important lesson in wholesale diamond buying.

A novice buyer sees:

-30% Rap

and thinks:

“better deal.”

A professional buyer asks:

“Why is it 30 back?”

That question matters much more.

A deeply discounted diamond may genuinely be underpriced.

Or the market may simply be correctly discounting undesirable characteristics.

Why Two Diamonds with the Same 4Cs Can Trade Differently

Consider two GIA-graded Round Brilliants:

Diamond A

1.01 ct
G
VS2
Excellent Cut
Excellent Polish
Excellent Symmetry
strong face-up appearance
desirable proportions
no significant visual issue

Diamond B

1.01 ct
G
VS2
Excellent Cut
Excellent Polish
Excellent Symmetry
less attractive proportions
small visual spread
strong fluorescence
central inclusion

Both can appear similar in a database search.

They may still trade differently.

Rapaport itself notes that factors such as Cut, fluorescence and grading-report characteristics can affect value beyond the core matrix.

The 4Cs Are Only the Beginning of Wholesale Pricing

The market considers:

Carat,

Colour,

Clarity,

Cut,

but also:

measurements,

table,

depth,

crown angle,

pavilion angle,

girdle,

fluorescence,

inclusion type,

inclusion position,

certificate laboratory,

certificate date,

and visual appearance.

For fancy shapes, additional factors become even more important.

Round Brilliant Pricing vs Fancy-Shape Pricing

Rapaport’s standard Price List currently provides a Round list and a Pear list, with the Pear list used as a broad benchmark for other fancy shapes. Rapaport explicitly notes that it does not publish a separate Price List for every fancy shape.

This matters because:

Oval,

Emerald Cut,

Cushion,

Radiant,

Marquise,

and Pear

all have different market dynamics.

A buyer should therefore be especially cautious about valuing fancy shapes using one percentage alone.

Fancy Shapes Need More Visual Analysis

Consider two 1.50 ct Ovals.

Both:

G Colour,

VS2,

GIA.

One has:

beautiful outline,

strong spread,

minimal bow-tie,

attractive 1.45 ratio.

The other has:

heavy bow-tie,

bulging shoulders,

deep proportions,

small face-up appearance.

A simple Rap calculation will not capture that difference adequately.

The market will.

What Is Rapaport Trade Pricing?

This is a useful distinction.

Rapaport also provides market tools based on current listed inventory.

Its Rapaport Trade Price List shows average and best asking prices for comparable GIA-graded diamonds listed on the platform, with discounts expressed relative to the standard Rapaport Price List.

For a buyer, this creates two different references:

Rapaport Price List

Benchmark.

Rapaport Trade / TradeScreen

Current comparable asking-market data.

That second reference can be extremely valuable.

Benchmark vs Live Market

ToolBest Used ForRapaport Price ListStandard benchmarkRapaport discountNegotiation shorthandRapaport Trade AverageMarket positioningRapaport Trade Best PriceLowest comparable listingsSupplier quoteActual available stoneVisual evaluationQuality decision

Professional buying combines these rather than relying on one number.

Example: Why Live Comparables Matter

Suppose Rap for a category implies:

$10,000 full list.

Supplier offers:

-20%

= $8,000.

That sounds reasonable.

But then you search comparable market inventory and discover several similar stones at:

$7,300,

$7,450,

and $7,600.

Suddenly:

-20%

is not necessarily competitive.

Conversely, if comparable attractive stones are all:

$8,500–$9,000,

then the $8,000 offer may be strong.

This is why:

discount-to-Rap should be compared with the actual market.

Cut Quality Can Have a Large Pricing Effect

Rapaport specifically notes that poorly cut, flat or deep diamonds can be worth substantially less than well-cut stones and that its Price List is based on qualifying fine-cut material.

For Round Brilliants, buyers often use the trade shorthand:

3EX

Triple Excellent

meaning:

Excellent Cut,

Excellent Polish,

Excellent Symmetry.

But even two Triple Excellent diamonds can look different.

A grading category is not a guarantee of identical proportions or visual performance.

Why Proportions Matter Inside Triple Excellent

Two GIA Triple Excellent diamonds can still have different:

table percentages,

depth,

crown angles,

pavilion angles,

and face-up spread.

Retailers should therefore avoid:

“It’s Triple Excellent, so it must be perfect.”

Better:

“Triple Excellent narrows the field, but we still evaluate the individual proportions and appearance.”

Fluorescence and Price

Rapaport notes that fluorescence can influence market pricing and publishes guidance around discounts and premiums for fluorescent stones.

That does not mean fluorescence is automatically bad.

Some buyers avoid:

Medium,

Strong,

or Very Strong fluorescence

in certain high-colour categories.

Other diamonds show fluorescence with no undesirable visual effect.

Therefore, the buyer should ask:

Does the fluorescence negatively affect appearance?

How does the target customer view it?

Is the market discount justified?

Certificate Laboratory Can Affect Price

Rapaport states that its Price List is primarily based on GIA grading standards and notes that diamonds with non-GIA reports may trade at discounts relative to comparable GIA-reported stones in some market segments.

For European jewellers, however, the market also regularly uses:

HRD,

IGI,

and other established laboratories.

The important point is not:

“Only GIA has value.”

It is:

different buyers may price grading reports differently.

That should be understood before purchasing.

Certificate Date Can Matter Too

An older report is not automatically invalid.

But a buyer may ask:

Has the diamond been damaged?

Has it been repolished?

Does the laser inscription still match?

Would the target market prefer a fresh report?

For higher-value goods, certificate age may influence:

liquidity

and

buyer confidence.

Carat Breakpoints Create Major Price Jumps

Natural-diamond pricing does not increase smoothly by weight.

Certain thresholds create stronger commercial demand.

Examples include:

0.30 ct,

0.50 ct,

0.70 ct,

1.00 ct,

1.50 ct,

2.00 ct,

3.00 ct.

These are sometimes called:

magic sizes

price breakpoints.

A 1.00 ct diamond can command a noticeably different market level from a 0.95 ct diamond even when the visual difference is modest.

Why 0.90–0.99 ct Can Be Good Retail Inventory

Suppose a client wants the appearance of approximately 1 ct.

Compare:

Stone A

1.00 ct
G VS2
higher wholesale price

Stone B

0.96 ct
G VS2
similar dimensions
lower cost

If Stone B has excellent spread and strong proportions, it may provide a very attractive customer-value proposition.

This is one way retailers can protect margin without simply lowering quality.

But Do Not Buy “Underweight” Stones Blindly

A 0.96 ct stone can be excellent value.

Or it can simply be:

deep,

small-looking,

and cheap.

Always compare actual millimetre measurements.

Carat is weight.

It is not face-up size.

Price per Carat vs Total Diamond Price

Another common beginner mistake is comparing only:

price per Carat.

Suppose:

Diamond A = 0.95 ct at $6,000/ct

Diamond B = 1.01 ct at $6,500/ct

The second stone has both:

higher price per Carat

and

higher weight.

So total cost rises significantly.

Retailers need to model:

total landed stone cost, not only the rate.

Wholesale Diamond Cost Should Include More Than the Stone Price

A real sourcing calculation may include:

diamond cost,

shipping,

insurance,

customs or import costs where applicable,

bank/FX cost,

certification,

brokerage,

and financing.

Landed Cost Formula

A practical model is:

Supplier diamond price

shipping

insurance

import/customs costs where applicable

currency cost

certification or handling

landed wholesale cost

Retail margin should be calculated from the landed cost—not just the supplier’s headline price.

Markup and Margin Are Not the Same Thing

This distinction is extremely important for jewellery retailers.

Suppose your landed cost is:

€4,000.

You sell for:

€6,000.

Your markup is:

€2,000 ÷ €4,000

50%.

But your gross margin is:

€2,000 ÷ €6,000

33.3%.

Those are different numbers.

Markup vs Gross Margin

CostRetailGross ProfitMarkupGross Margin€4,000€6,000€2,00050%33.3%€4,000€8,000€4,000100%50%€5,000€7,500€2,50050%33.3%

Retailers should know which metric they are discussing.

Retail Margin Should Not Be One Fixed Percentage for Every Diamond

A low-cost fashion-jewellery piece can support a different margin structure from:

a 3 ct natural centre stone.

A very expensive loose diamond may require a lower percentage margin but still produce strong absolute gross profit.

For example:

Product A

Cost: €500

Retail: €1,000

Gross profit: €500

Product B

Cost: €20,000

Retail: €24,000

Gross profit: €4,000

Product B has a much smaller percentage margin.

But a much larger absolute profit contribution.

Think in Both Margin Percentage and Gross Profit Euros

A strong pricing system considers:

gross margin percentage,

gross profit amount,

inventory-turn speed,

marketing cost,

sales commission,

payment-processing fees,

after-sales obligations,

and capital tied up in the diamond.

A 40% margin on a stone that never sells is less useful than a 25% margin on inventory that turns quickly.

Inventory Turnover Changes the Real Economics

Suppose:

Diamond A

Cost: €10,000
Gross profit if sold: €3,000
Sells in 30 days

Diamond B

Cost: €10,000
Gross profit if sold: €4,000
Sits for 18 months

Diamond B appears to offer better margin.

But the cash is locked up much longer.

Retailers need to think about:

return on inventory, not only percentage markup.

Premium vs Commercial Natural Diamonds

The original draft described the 2026 market as two simple tiers:

premium

and

commercial.

That is directionally useful but too broad.

The market is more segmented.

A diamond can be commercially attractive because of:

strong proportions,

popular size,

marketable report,

and correct pricing

without being a “luxury premium” stone.

Likewise, an expensive D IF diamond may be:

high grade

but commercially slow-moving.

Better Inventory Categories

CategoryTypical Buying PriorityCore bridalLiquidityPremium bridalQuality + presentationHigh jewelleryRarityFancy colourIndividual marketCommercial meleeConsistencyLarge centre stonesCapital efficiencyVintage cutsSpecialist demand

Different categories require different pricing logic.

2026 Market Conditions: Do Not Assume Wholesale Prices Are Rising Across the Board

This is one of the biggest factual corrections required in the original article.

The current market is not simply:

lower supply + strong demand = rising diamond prices.

De Beers reported that rough trading conditions remained challenging in H1 2026. Its consolidated average realised rough price declined to $105 per carat, while its average rough price index was down 16% year over year. De Beers also said lower-value natural diamonds continued to face pressure from lab-grown competition, although stronger pricing for higher-value goods helped stabilise the overall average price index during the period.

So the more accurate 2026 conclusion is:

pricing remains highly category-specific.

2026 Natural-Diamond Pricing Is Segmented

SegmentCurrent PressureLower-value natural diamondsLab-grown competitionHigher-value goodsMore pricing resilienceRough market overallChallengingExact large specificationsAvailability dependentRare fancy coloursSpecialist pricingCommercial certified goodsCompetitive comparison market

Retailers should therefore avoid telling customers:

“Natural diamond prices are rising because supply is shrinking.”

That is too broad.

Production Is Also Being Managed Against Demand

De Beers’ current 2026 guidance remains 21–26 million carats, and the company says it continues to align output with prevailing demand. Its H1 2026 production was higher year over year, but it expects production rates to decline from H1 levels during the second half because of maintenance and the proposed Venetia pause.

This reinforces an important commercial lesson:

mine supply and diamond prices do not move in a simple straight line.

Wholesale Pricing Should Be Category-Specific

A retailer should monitor:

1 ct G VS2 Round Brilliant

separately from:

2 ct D VVS1 Emerald Cut,

and both separately from:

Fancy Yellow,

melee,

or Old European Cuts.

A single market-wide “diamond price” is not useful enough for buying decisions.

How to Compare Two Wholesale Quotes Properly

Suppose Supplier A offers:

1.00 ct G VS2 GIA Round
Rap -22

Supplier B offers:

1.01 ct G VS2 GIA Round
Rap -18

The inexperienced buyer may automatically choose Supplier A.

A better comparison checks:

Cut,

proportions,

measurements,

fluorescence,

inclusion location,

certificate date,

visual appearance,

total price,

shipping,

payment terms,

and market comparables.

Wholesale Comparison Table

FactorSupplier ASupplier BRap discount-22%-18%Carat1.001.01CutExcellentExcellentSpreadAverageStrongFluorescenceStrongNoneInclusionCentralSideVisual appealModerateStrongTotal priceLowerHigherResale liquidityModerateHigher

Which is the better buy?

Potentially Supplier B.

The smaller discount may be justified.

Payment Terms Can Affect Price

Rapaport’s benchmark is framed around cash asking prices rather than long-credit transactions.

In real wholesale trade, terms may include:

immediate payment,

bank transfer,

memo,

consignment,

30-day terms,

or other arrangements.

A supplier giving:

60-day payment terms

may price differently from one requiring:

same-day cash settlement.

The financing benefit has value.

Memo Is Not the Same as Purchase

In diamond trading, a stone may sometimes be provided:

on memo.

This generally means the retailer can review or show the diamond without immediately purchasing it outright under the agreed terms.

That can reduce inventory risk.

But memo terms vary considerably.

Retailers should confirm:

insurance responsibility,

return deadline,

shipping liability,

and purchase trigger

before accepting stones.

Currency Can Change Your Effective Cost

European jewellers frequently buy diamonds quoted in:

USD

and sell jewellery in:

EUR,

GBP,

CHF,

or another currency.

A diamond priced competitively today can become more expensive if the currency moves before payment.

Large retailers may manage this through treasury or hedging.

Smaller jewellers should at minimum include:

exchange-rate cost

in margin calculations.

Example FX Impact

Supplier quote:

$20,000.

At:

€1 = $1.20

cost approximately:

€16,667.

If EUR weakens to:

€1 = $1.10

the same $20,000 becomes approximately:

€18,182.

That is more than €1,500 difference without the diamond price changing at all.

Pricing Transparency Does Not Mean Exposing Your Exact Wholesale Cost to Every Customer

This distinction matters.

Customers deserve:

clear product information,

fair pricing,

and honest explanations.

That does not require the retailer to disclose:

supplier cost,

Rap discount,

or internal margin.

The retailer can explain why one diamond costs more than another.

For example:

“This diamond costs more because it combines a stronger Cut, better proportions and a more desirable visual appearance within the same Carat, Colour and Clarity range.”

That is useful transparency.

Retail Pricing Should Sell Value, Not Only Numbers

If the retailer says:

“This one is more expensive because it is Rap -15 instead of -25.”

most customers will learn nothing.

Instead explain:

why the stone looks better,

why the proportions matter,

why one shape is harder to source,

why a grading report matters,

and why the selected stone fits the customer’s priorities.

Wholesale pricing language belongs primarily behind the counter.

How Dalila Diamonds Can Support Transparent B2B Pricing

Dalila Diamonds can position its trade pricing around clarity rather than mystery.

For a natural diamond quote, a retailer should be able to understand:

the stone specification,

grading laboratory,

Rap position where relevant,

actual total price,

current market context,

and why the diamond may trade differently from superficially similar alternatives.

For more complex requests, Dalila can also compare:

multiple stones,

different Carat thresholds,

different Colour/Clarity combinations,

and near-equivalent alternatives.

Example Dalila Trade Quote

Instead of:

1.00 ct G VS2 – €X

a more useful trade comparison might show:

OptionSpecificationDifferenceA1.01 G VS2 ExcellentStrong premium optionB0.96 G VS2 ExcellentBetter valueC1.02 H VS2 ExcellentLarger at lower ColourD1.00 G SI1 eye-cleanClarity/value optimisation

The retailer can then choose according to:

customer,

margin,

and positioning.

Buying Below a Magic Size Can Protect Margin

This is especially useful for independent jewellers.

A customer may ask:

“I want around 1 Carat.”

That creates flexibility.

A 0.95–0.99 ct stone with excellent dimensions may provide:

similar visual impression,

lower wholesale cost,

and more room for retailer margin.

The jeweller is not tricking the customer.

The actual Carat should be disclosed clearly.

The value comes from intelligent specification selection.

Lower Colour Can Also Be a Strategic Choice

Suppose the customer is buying a yellow-gold engagement ring.

A G Colour may be excellent.

But perhaps an H or I Colour diamond still appears very attractive in the finished jewellery.

That difference can free budget for:

better Cut,

larger Carat,

or stronger overall design.

This is the type of trade-off an expert retailer can explain.

Clarity Can Be Optimised Too

Many customers assume:

VVS is always better.

Technically, it is higher clarity.

Commercially, an eye-clean VS2 or SI1 may offer far stronger value depending on:

stone,

shape,

and inclusion position.

The retailer’s role is not to sell the highest laboratory grade.

It is to sell the best combination for the customer.

Pricing Strategy Should Begin With the Customer Segment

A discount-led online seller may need:

extremely competitive wholesale pricing.

A luxury private-client jeweller may prioritise:

quality,

rarity,

service,

and sourcing experience.

A bespoke atelier may need:

low inventory

and

high sourcing flexibility.

A chain retailer may prioritise:

repeatability,

volume,

and standardised margins.

Wholesale purchasing should support the retail model.

Retail Model vs Pricing Priority

Retail ModelMain Buying PriorityOnline price competitorLowest competitive landed costBridal boutiqueLiquidity + qualityBespoke jewellerFlexibilityLuxury retailerRarity + presentationProduction brandConsistencyVintage specialistSpecialist acquisition priceMulti-store chainRepeatability + volume

There is no universal “correct margin.”

AEO: What Is the Rapaport Price List?

The Rapaport Price List is a widely used natural-diamond pricing benchmark published for professional diamond trading. It provides reference prices by shape, Carat range, Colour and Clarity but does not represent actual completed transaction prices.

AEO: How Often Is the Rapaport Price List Updated?

Rapaport currently publishes its main Price List weekly.

AEO: Does Rapaport Show Actual Sale Prices?

No. Rapaport states that the Price List represents benchmark high cash asking prices rather than completed transaction prices.

AEO: What Does Rap -20 Mean?

It means the quoted price is 20% below the relevant Rapaport benchmark.

AEO: What Does “20 Back” Mean in Diamonds?

It is trade shorthand commonly used to describe a price approximately 20% below Rapaport.

AEO: Can Diamonds Trade Above Rapaport?

Yes. Depending on the stone and market, diamonds can trade closer to list or at premiums, although many ordinary stones trade below the benchmark. Rapaport itself notes that discounts and premiums vary.

AEO: What Is the Normal Discount Off Rapaport?

There is no single correct discount. Rapaport’s public guidance says many diamonds may trade around 10%–30% below its benchmark, but actual discounts vary materially by specification, quality and market.

AEO: Is a Bigger Rap Discount Better?

Not necessarily. A larger discount can reflect weaker Cut, fluorescence, proportions, certificate preference, visual appearance or weaker demand.

AEO: Why Can Two G VS2 Diamonds Have Different Prices?

Because Carat, Colour and Clarity do not capture all value factors. Cut, proportions, measurements, fluorescence, inclusions, grading report and marketability can all affect price.

AEO: Does Cut Affect Wholesale Diamond Price?

Yes. Rapaport specifically notes that poorly cut or badly proportioned diamonds can be worth substantially less than well-cut stones.

AEO: What Is Triple Excellent?

In Round Brilliant trading, Triple Excellent usually refers to Excellent grades for Cut, Polish and Symmetry.

AEO: Are All Triple Excellent Diamonds Equal?

No. Their proportions, measurements and visual performance can still vary.

AEO: Does Fluorescence Affect Diamond Price?

It can. Rapaport specifically identifies fluorescence as a factor that can influence pricing.

AEO: Does the Grading Laboratory Affect Price?

Yes. Buyer preferences and confidence in grading can affect marketability. Rapaport’s benchmark is primarily aligned with GIA grading standards and notes that non-GIA stones can trade differently in some categories.

AEO: What Is Rapaport Trade?

Rapaport Trade is a professional diamond marketplace and pricing platform that provides current market comparisons, including average and best asking prices for comparable listed diamonds.

AEO: What Is TradeScreen?

TradeScreen is a Rapaport Trade tool that lets users compare a diamond’s price with current similar listings and view average and best asking prices.

AEO: What Are Magic Sizes in Diamonds?

Magic sizes are commercially important Carat thresholds such as 0.50 ct, 1.00 ct or 2.00 ct where market pricing can change disproportionately.

AEO: Is a 0.95 ct Diamond Cheaper Than a 1.00 ct Diamond?

Often, yes, because the 1.00 ct threshold can carry a stronger market premium, though the individual quality and market still determine the actual difference.

AEO: Does a 1.00 ct Diamond Look Much Larger Than 0.95 ct?

Not always. Actual millimetre dimensions and Cut proportions determine face-up appearance.

AEO: What Is Price per Carat?

It is the diamond’s total price divided by its Carat weight.

AEO: Is Price per Carat the Same as Total Price?

No. A heavier stone can have both a higher rate per Carat and a higher total cost.

AEO: What Is Landed Diamond Cost?

Landed cost is the total cost of acquiring the diamond after adding relevant shipping, insurance, currency, import and handling expenses to the supplier price.

AEO: What Is Retail Markup?

Markup is gross profit expressed as a percentage of cost.

AEO: What Is Gross Margin?

Gross margin is gross profit expressed as a percentage of the final selling price.

AEO: Is 50% Markup the Same as 50% Margin?

No. A 50% markup on a €4,000 cost produces a €6,000 retail price and a gross margin of about 33.3%.

AEO: What Margin Should a Jeweller Make on a Diamond?

There is no universal percentage. Margin should reflect the retailer’s business model, absolute gross profit, inventory risk, selling costs, competition and turnover speed.

AEO: Are Natural Diamond Prices Rising in 2026?

Not across the board. De Beers reported challenging rough-diamond conditions in H1 2026, with its average rough price index down 16% year over year, while higher-value goods showed stronger relative pricing.

AEO: Are Lower-Value Natural Diamonds Under Pressure?

Yes. De Beers says lab-grown diamonds continue to pressure lower-value natural-diamond demand.

AEO: Are Higher-Value Natural Diamonds Performing Better?

De Beers reported stronger pricing for higher-value goods during H1 2026, helping support the overall price index.

AEO: Should Retailers Buy Diamonds Only Based on Rap Discount?

No. Rap discount should be compared with actual market supply, visual quality, grading, landed cost and expected resale margin.

AEO: Should Retailers Compare Live Listings?

Yes. Current comparable asking prices can provide better context than a benchmark percentage alone. Rapaport Trade offers live-market comparison tools for this purpose.

AEO: Can Dalila Diamonds Help Retailers Understand Wholesale Pricing?

Yes. Dalila Diamonds can support trade buyers by providing clear natural-diamond quotations, specification comparisons and Antwerp sourcing options so retailers can compare total value rather than relying on one discount figure alone.

Diamond Wholesale Buying Checklist

Pricing QuestionChecked?What is the current Rap benchmark?□What is the quoted Rap discount?□What is the total stone price?□What is the price per Carat?□Is the report verified?□Is Cut appropriate?□Are proportions strong?□Is fluorescence acceptable?□Are inclusions visually acceptable?□Is face-up spread competitive?□Are similar stones available cheaper?□Are cheaper stones genuinely comparable?□Is shipping included?□Is insurance included?□Is FX exposure considered?□Are import costs considered?□What is the landed cost?□What is expected retail price?□What is gross margin?□What is absolute gross profit?□How quickly should the stone sell?□Is the supplier reliable?□Are payment terms clear?□Is memo available if appropriate?□

Example Wholesale Comparison

FactorDiamond ADiamond BDiamond CCarat1.000.961.02ColourGGHClarityVS2VS2VS2CutExcellentExcellentExcellentRap Discount-23%-16%-25%Visual SpreadAverageStrongStrongFluorescenceStrongNoneNoneMarketabilityModerateHighHighBuying LogicCheapest percentageBest balanced valueLarger-value option

The largest Rap discount is not automatically the strongest retail purchase.

Frequently Asked Questions

What Is Rapaport?

Rapaport is a diamond-industry company providing pricing benchmarks, trading tools, market information and professional diamond services.

When Did the Rapaport Price List Start?

Rapaport says its benchmark was established in 1978.

Is Rapaport the Final Diamond Price?

No.

Is Rapaport a Wholesale Benchmark?

Yes.

Is Rapaport Based on Actual Completed Sales?

No. The main Price List represents benchmark high cash asking prices rather than completed transaction prices.

Is the Rapaport List Updated Weekly?

Yes.

What Does -10 Rap Mean?

Ten percent below the applicable Rapaport benchmark.

What Does -20 Rap Mean?

Twenty percent below the applicable benchmark.

What Does -30 Rap Mean?

Thirty percent below the applicable benchmark.

Does a Bigger Discount Mean a Better Diamond?

No.

Why Would a Diamond Be Heavily Discounted?

Possible reasons include weaker Cut, proportions, fluorescence, certificate differences, less desirable inclusions or weaker market demand.

Does GIA Affect Wholesale Price?

It can affect marketability because Rapaport’s main benchmark is aligned primarily with GIA grading standards.

Can HRD Diamonds Trade Differently?

Yes.

Can IGI Natural Diamonds Trade Differently?

Yes.

Does Cut Affect Price?

Yes.

Does Fluorescence Affect Price?

Potentially.

Does Certificate Age Affect Price?

It can affect marketability in some transactions.

Do Measurements Affect Value?

Yes.

Can Two 1-Carat Diamonds Look Different in Size?

Yes.

What Is a Magic Size?

A commercially important Carat threshold.

Is 1.00 ct a Magic Size?

Yes.

Is 2.00 ct a Magic Size?

Yes.

Can 0.99 ct Be Better Value?

Potentially.

Should Retailers Buy 0.90–0.99 ct Diamonds?

They can be attractive inventory when dimensions and quality are strong.

What Is a Wholesale Diamond Margin?

The amount a retailer earns between its total acquisition cost and selling price.

What Is the Difference Between Margin and Markup?

Markup is calculated from cost. Margin is calculated from selling price.

Should All Diamonds Have the Same Retail Margin?

No.

Do Expensive Diamonds Usually Need the Same Percentage Markup as Small Jewellery?

Not necessarily.

Is Turnover Important?

Yes. Inventory that sells rapidly can produce stronger capital efficiency even at lower percentage margin.

Are Diamond Prices Stable?

No. Natural-diamond pricing changes with supply, demand, market segment and broader conditions.

Are Prices Rising in 2026?

Not universally. The current market is segmented, and De Beers reported weaker overall rough pricing alongside stronger relative performance for higher-value goods.

Is Lab-Grown Affecting Natural Diamond Pricing?

De Beers says lab-grown competition continues to pressure lower-value natural-diamond demand.

Should a Retailer Look at Live Market Listings?

Yes.

What Is Rapaport TradeScreen?

A tool for comparing a diamond against current market asking prices on Rapaport Trade.

Can Retailers Negotiate Below the Quoted Price?

Potentially, depending on supplier, stone, market and terms.

Do Payment Terms Affect Price?

They can.

Does Memo Affect Pricing?

It can because memo changes inventory and financing risk.

Should Retailers Expose Their Rap Discount to Customers?

Usually it is more useful to explain the diamond’s quality and value rather than internal wholesale pricing mechanics.

Can Dalila Diamonds Provide Wholesale Pricing Comparisons?

Yes. Dalila Diamonds can support B2B buyers with natural-diamond comparisons across Carat, Colour, Clarity, Cut and available Antwerp inventory.

Conclusion: Rapaport Is the Starting Point—Not the Buying Decision

Natural-diamond wholesale pricing becomes much easier once the basic language is understood.

Rap.

Back.

Discount.

Price per Carat.

Magic sizes.

Gross margin.

Landed cost.

Those concepts give retailers a structured way to compare offers.

But the biggest mistake is believing that the system can be reduced to one percentage.

It cannot.

A diamond quoted at:

-30 Rap

is not automatically a better buy than one at:

-20 Rap.

The stronger stone may have:

better Cut,

better proportions,

better face-up spread,

more desirable fluorescence,

a cleaner inclusion pattern,

better marketability,

or simply stronger current demand.

Rapaport itself makes clear that its Price List is a benchmark rather than a record of final transaction prices, and its newer market tools specifically allow traders to compare average and best current asking prices for similar diamonds.

That is the approach retailers should adopt.

Start with the benchmark.

Calculate the discount.

Check the actual total price.

Compare live supply.

Inspect the diamond.

Calculate landed cost.

Understand the resale customer.

Calculate both margin percentage and gross profit.

Consider inventory turnover.

And only then decide whether the stone is commercially attractive.

The 2026 market makes this discipline even more important because natural-diamond pricing is highly segmented. De Beers’ latest results show a market where overall rough pricing has been under pressure while higher-value categories have shown more resilience, making broad assumptions about “diamond prices” increasingly unreliable.

For Dalila Diamonds, the strongest B2B proposition is therefore not simply:

“We offer good Rap discounts.”

Almost any supplier can make that claim.

The stronger proposition is:

“We help trade buyers understand what they are paying for, compare the diamond against real alternatives and source the specification that creates the best balance between quality, marketability and margin.”

Because the number beside the diamond matters.

But for a professional buyer, the real question is always:

what quality, liquidity and retail opportunity are you actually receiving for that number?

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