What is the Rapaport price list
The Rapaport Diamond Report was first published by Martin Rapaport, a diamond dealer in New York, in 1978. Before Rapaport, diamond pricing was entirely opaque: buyers and sellers had no common reference point, and information asymmetry strongly favoured experienced dealers over buyers. Rapaport's insight was that a published price list for polished diamonds, based on the GIA grading system's colour and clarity categories, would provide a shared reference that could transform pricing transparency in the trade.
The publication was initially controversial. Established dealers who benefited from opacity resisted it. Buyers who gained transparency from it embraced it. Over the following decades, the Rapaport list became the standard pricing reference in the global polished diamond trade and is now used by dealers, buyers, and price trackers worldwide.
The Rapaport Group publishes the price list weekly, every Friday, reflecting observed transactions and market intelligence from the previous week. The list covers round brilliant diamonds in multiple carat weight ranges, organised into grids by colour (D through M) and clarity (FL through SI2, with some grids extending to I1). Separate lists exist for pear and marquise shapes, though these are used less consistently than the round brilliant list. No standardised Rapaport grid exists for fancy shapes more broadly.
Access to the Rapaport price list requires a subscription. The list is not publicly available for free. However, an approximate understanding of the Rapaport framework, the structure, the discount conventions, and the factors that drive discounts, is available from public sources and from this guide.
A weekly published price list for polished round brilliant diamonds, organised as a grid by carat weight range, colour grade (D–M), and clarity grade (FL–SI2). Created by Martin Rapaport in 1978. The primary pricing reference in the global polished diamond trade. Prices are expressed in US dollars per carat. Actual transaction prices are expressed as a percentage above or below Rapaport ("minus X to Rap" or "plus X to Rap"). A subscription is required to access the full list.
The price grid: how it is structured
The Rapaport grid organises diamonds into carat weight ranges, with a separate grid for each range. The main weight ranges covered are: under 0.18 ct, 0.18–0.22 ct, 0.23–0.29 ct, 0.30–0.37 ct, 0.38–0.45 ct, 0.46–0.49 ct, 0.50–0.69 ct, 0.70–0.89 ct, 0.90–0.99 ct, 1.00–1.49 ct, 1.50–1.99 ct, 2.00–2.99 ct, 3.00–3.99 ct, 4.00–4.99 ct, and 5.00 ct and above.
Within each weight range, the grid has colour grades across one axis (D, E, F, G, H, I, J, K, L, M) and clarity grades along the other (FL, IF, VVS1, VVS2, VS1, VS2, SI1, SI2). Each cell in the grid contains a price per carat in US dollars. These are high-reference prices: they represent the upper end of the expected market range for a well-cut stone in that grade and weight category.
The prices in the grid increase as you move toward the top-left corner (better colour, better clarity) and decrease as you move toward the bottom-right corner (lower colour, lower clarity). The price jumps at certain carat weight thresholds are significant: a stone just above 1.00 carat is priced on the 1.00–1.49 ct grid, which shows substantially higher prices than the 0.90–0.99 ct grid for the same colour and clarity. This is the origin of the "magic weight" premium that is discussed in the buying guide.
The Rapaport grid places stones into different weight brackets, and the prices per carat are much higher in the bracket above each major threshold. A 0.99 ct stone and a 1.01 ct stone of the same colour and clarity have the same visual appearance, but the 1.01 ct stone is priced on a grid that reflects the consumer premium for a "one carat" diamond. The actual price difference can be 20 to 40 percent between a 0.98 ct stone and a 1.05 ct stone of identical quality. This is not fraud; it is supply and demand, with consumer preference for round-number weights creating a price premium. Understanding this lets buyers consider a 0.92 to 0.98 ct stone as a significant saving over a 1.00+ ct stone with no visible difference.
Simplified structure of a Rapaport grid for 1.00–1.49 ct round brilliants. Colour grades run across the top (D to J shown), clarity grades down the left (FL to SI2). Prices increase toward the top-left (highest grade) and decrease toward the bottom-right. Each cell contains a price per carat in USD. Actual prices are not shown and require a subscription.
Rap back: how actual prices relate to the list
The Rapaport prices are not transaction prices. They are reference prices, set deliberately at the high end of the expected market. Actual trade transactions happen at a percentage below the Rapaport figure, called the "rap discount" or "rap back." A stone priced at "minus 35 to Rap" (or "35 back") means the actual transaction price is 35 percent below the Rapaport list price for that grade and weight.
The rap discount varies considerably by grade, market conditions, and the specific characteristics of the stone. As a rough orientation: in normal market conditions, D–F colour, FL–VVS2 clarity stones in popular sizes trade at relatively small discounts (minus 10 to 20 percent from Rap), because demand for these premium grades is strong and supply is limited. Lower colour and clarity combinations in the same weight range typically trade at larger discounts (minus 25 to 45 percent), because the market for these grades is more competitive and supply is more abundant.
Premiums above Rap (plus X to Rap) occur for exceptional stones: certified triple Excellent rounds with D–E colour and Flawless–VVS1 clarity, or stones with unique characteristics like exceptional type IIa certification, Hearts and Arrows certification, or provenance from a specific notable mine. These premiums reflect demand from collectors and buyers who specifically seek the best within a category.
| Grade combination (1.00 ct round) | Approximate rap discount range (normal market) | Notes |
|---|---|---|
| D–F / FL–VVS2 | Minus 10–20% | Premium grades, strong demand from collectors and high-end retail. Some exceptional stones trade at par or premium. |
| D–F / VS1–VS2 | Minus 15–25% | Still high-demand grades. The VS category at top colour is the sweet spot for many high-end buyers. |
| G–H / VVS–VS | Minus 20–35% | Most popular commercial grades. High volume, competitive pricing. Slight variation for cut quality. |
| G–H / SI1–SI2 | Minus 30–42% | Volume commercial grades. Larger discounts because supply is abundant and demand less differentiated. |
| I–J / VS–SI | Minus 35–50% | Lower colour grades have weaker demand in white metal settings. Larger discounts. |
Discount ranges are approximate for illustration. Actual discounts vary with market conditions, stone-specific characteristics, and negotiating context. These figures are not transaction guarantees.
What moves the rap discount
Within a given grade cell in the Rapaport grid, stones trade at varying discounts based on factors the grid does not capture. Understanding these factors explains why two stones with identical GIA grades can transact at different rap discounts.
Cut quality within the Excellent range is a significant factor. GIA's Excellent cut grade covers a range of proportions. An AGS 0 (ideal) stone or a Hearts and Arrows certified stone within the GIA Excellent band trades at a smaller discount (higher price) than a standard GIA Excellent stone, because buyers who specifically seek maximum optical performance will pay a premium for verified precision cutting.
Fluorescence matters for price. Strong or very strong blue fluorescence in D–F colour diamonds typically increases the rap discount (reduces the price) because some buyers and dealers consider strong fluorescence a negative. In lower colour ranges (I–J), faint to medium blue fluorescence can actually reduce the discount or even command a slight premium because the blue fluorescence can partially mask the stone's warm tint in certain lighting. Fluorescence pricing is nuanced and market-sensitive.
The specific proportions within a grade affect trading price. A GIA Excellent round with table percentage, crown angle, and pavilion angle at the optimum end of the Excellent range trades closer to Rap than a stone with proportions at the acceptable but less optimal end of the same grade band. Experienced buyers who evaluate proportions on a certificate rather than just reading the grade can identify these differences.
Market conditions in the polished diamond market shift overall discount levels week to week. In strong demand periods (before major gifting seasons, when consumer confidence is high), discounts compress. In weak demand periods (market slowdowns, excess inventory), discounts widen. The Rapaport Group's TradeWire publication reports on market sentiment and discount trends for trade subscribers.
What Rapaport does not capture
The Rapaport grid captures four variables: carat weight range, colour grade, and clarity grade for round brilliants. It does not capture cut grade (the GIA cut grade column on a certificate), specific proportions, fluorescence, the quality of polish and symmetry, the specific inclusion type and position within a clarity grade, or any characteristic specific to an individual stone that makes it better or worse than others in the same grade cell.
This means Rapaport is a starting point, not an endpoint, for pricing any specific stone. Two GIA-certified 1.00 ct G VS1 round brilliants can legitimately trade at different rap discounts because one has GIA Excellent cut grade, Excellent polish, Excellent symmetry, no fluorescence, and well-placed inclusions, while the other has Good cut, Good symmetry, strong fluorescence, and an inclusion cluster in the centre of the table. Both receive the same grid placement in Rapaport. The market will price them differently.
The Rapaport system is also US dollar denominated. Indian buyers convert the Rapaport price per carat to Indian rupees using the prevailing exchange rate, then apply the rap discount, then add import duties (for India's natural diamond import: 7.5% customs duty plus GST), making charges, and retail margin. The rupee price of a given Rapaport grade moves when the USD/INR rate moves, which adds a currency risk dimension that purely domestic transactions do not have.
Fancy shapes and Rapaport
The Rapaport system is designed primarily for round brilliants. Rapaport publishes separate grids for pear and marquise shapes, but these are used less universally than the round list. For other fancy shapes (oval, cushion, emerald, princess, radiant, Asscher, heart), no official Rapaport grid exists.
In practice, fancy shape prices are often discussed relative to the equivalent round Rapaport price, with typical discounts applied. Oval diamonds might trade at "minus 10 to 15 percent to round Rap" for comparable grades, reflecting the slight discount fancy shapes traditionally carry versus rounds. Cushions at similar quality might be "minus 15 to 20 percent to Rap." These relative discounts shift with fashion: oval diamonds in the mid-2020s traded at smaller discounts to round Rap than in previous decades because demand for ovals increased substantially.
Fancy shapes with specific quality considerations command their own adjustments within the relative-to-round framework. An oval with a minimal bowtie trades at a smaller discount to round Rap than one with a severe bowtie. An emerald cut with GIA Excellent symmetry trades closer to round Rap than one with Very Good symmetry. These adjustments are negotiated rather than published.
Lab-grown diamonds and Rapaport
Rapaport publishes a separate price list for lab-grown diamonds. Lab-grown diamond prices have declined substantially since 2020, and the lab-grown Rapaport list reflects this: the prices for lab-grown diamonds are a fraction of natural diamond prices for equivalent grades, and the discounts to lab-grown Rap tend to be much larger than natural Rap discounts, reflecting a market where supply has grown faster than demand.
As of mid-2026, lab-grown round brilliants of mainstream commercial grades (G–H, VS–SI) typically sell in the Indian retail market at 70 to 85 percent below the equivalent natural diamond retail price, and in the trade at even larger discounts. The lab-grown pricing market is more volatile than natural because lab-grown production capacity can increase rapidly in response to profitability, creating price cycles. Natural diamond supply is constrained by geology and mine development timescales; lab-grown supply is constrained primarily by manufacturing economics.
How buyers in India can use Rapaport knowledge
A consumer buyer in India cannot access the full Rapaport price list without a trade subscription. But understanding the framework provides several practical advantages even without the specific numbers.
First, it provides a vocabulary for conversations with dealers. A buyer who asks a dealer "what are you selling this at relative to Rap?" has signalled that they understand how diamond pricing works. Dealers respond differently to buyers who demonstrate trade knowledge than to those who do not. The conversation shifts from a one-sided presentation of a retail price to a more transparent discussion of where the stone sits in the market.
Second, it explains why prices jump at certain weights. Buyers who know about the 0.50 ct and 1.00 ct grid thresholds can deliberately target stones just below these thresholds (0.45–0.49 ct, 0.90–0.98 ct) for significant savings with no visible quality difference.
Third, it provides a framework for comparing prices from different sources. If a dealer's retail price on a G VS1 1.00 ct GIA Excellent round seems very high, a buyer who knows approximate Rap discounts for that grade can assess whether the markup is reasonable for the dealer's overhead and business model or represents an unusually high margin.
Fourth, it motivates the use of online price comparison tools. Sites like Rare Carat aggregate pricing from multiple sellers and display prices relative to market benchmarks that are influenced by the Rapaport framework. A buyer who understands that "competitive" means something specific in relation to market benchmarks can use these tools more effectively.
Ask any dealer or jeweller who is selling you a certified diamond: "What is your price relative to Rapaport for this grade?" A dealer who prices transparently and is comfortable with this question is worth working with. A dealer who responds with confusion, deflection, or hostility to the question is revealing something about how they prefer to transact. The question costs nothing and tells you a great deal.
Rapaport in India's diamond market
India is one of the world's largest consumers of polished diamonds and the world's largest processing centre. The Rapaport framework permeates the trade at every level: Surat's exporters price their polished stones in Rapaport terms for international buyers; Mumbai's BKC dealers quote prices to other dealers in Rap discount terms; and sophisticated retail buyers who know the system use it as a negotiating reference.
At the mainstream retail level, most Indian jewellery brands and stores do not price in Rap terms and most consumers do not ask. The price a consumer sees at Tanishq, Malabar, or CaratLane reflects the retailer's cost plus their margin, which varies considerably by retailer and does not transparently connect to the Rapaport framework. This is normal for retail in any market.
Where Rapaport knowledge is most useful in India is in transactions with independent jewellers, BKC-adjacent dealers, and Zaveri Bazaar dealers who operate closer to the trade. These sellers are more comfortable with trade-framework conversations, more likely to quote relative to Rap when pushed, and more likely to negotiate meaningfully on price when the buyer demonstrates understanding of the market.
Sources and data integrity note
The history and mechanics of the Rapaport Diamond Report: Rapaport Group (rapaport.com). First publication in 1978 by Martin Rapaport is documented in trade histories including Smillie, I. (2014). Diamonds. Polity Press, Cambridge.
Discount ranges in the table above are approximate estimates for normal market conditions as of mid-2026 and are illustrative only. Actual market discounts change weekly with market conditions. Verified current discount data requires a Rapaport trade subscription.
Lab-grown price trends are based on GJEPC data, Rapaport Lab-Grown Diamond Price Report, and industry analyst reports.
Frequently asked questions
Can I access the Rapaport price list without a trade subscription?
No, the full current Rapaport price list requires a subscription, which is priced for trade professionals rather than consumers. However, approximate market pricing for common grades is available from several free sources: Rare Carat (rarecarat.com) aggregates polished diamond pricing from multiple vendors and provides price comparisons that reflect market conditions influenced by the Rapaport framework. IDEX Online publishes polished diamond price indices. GIA's website has educational content on diamond value factors. These tools give consumers reasonable market orientation without requiring direct Rapaport access.
Is Rapaport the only price reference in the diamond trade?
Rapaport is the dominant reference for round brilliant polished diamonds, but other price indices exist. IDEX Diamond Price Index tracks polished diamond prices. Polygon is another trade network with pricing data. For rough diamonds, WWW International Diamond Consultants and IDEX publish rough price tracking. De Beers publishes its own polished diamond price index (the De Beers Diamond Index) for market tracking purposes. None of these has the same ubiquity in the round brilliant trade as Rapaport, which is why the Rap framework is the one that matters most for buyers to understand.
Does Rapaport apply to GIA-certified diamonds only?
In principle, Rapaport applies to any diamond graded to GIA-standard quality designations. In practice, most polished diamond trading using Rapaport as a reference involves GIA or IGI certified stones, because the grade on the certificate is the input into the Rap framework. Uncertified stones cannot be cleanly placed in the Rapaport grid. Stones certified by EGL, HRD, or other laboratories have historically been treated with some discount to their stated grades when traded in Rap terms because these labs have had reputations for grade inflation relative to GIA. GIA and IGI certified stones are the most directly comparable in the Rapaport framework.
If I know the Rapaport price and the discount, can I calculate what a stone "should" cost in India?
Approximately, but with important caveats. The calculation is: Rapaport price per carat × (1 minus discount) × carat weight × USD/INR exchange rate × (1 + import duty + GST) = approximate landed cost. Adding a dealer's margin and making charges gets closer to retail. The challenge is that "the discount" varies by stone, market conditions, and who is selling. The Rapaport price itself changes weekly. The calculation gives you a rough market orientation rather than a precise figure. Used as a sanity check against a quoted retail price, it is genuinely useful. Used as an exact target price for negotiation, it may lead to unrealistic expectations.
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