The Rapaport price list is the primary source of diamond price information for the diamond trade. It is commonly used by the diamond and jewelry industry as an approximate guideline for evaluating diamond prices. It is published online every midnight Thursday.

For 1/3 carat and larger rounds, there are 2 Rapaport Diamond Indexes under each matrix.

The indexes are followed by an = sign and a number that reflects the percentage change in the index since the previous Price List. All indexes are in hundreds of dollars per carat.

Cut has an important impact on price. A poorly cut, flat or deep diamond is worth substantially less than a well-cut diamond. The price information in the Rapaport Diamond Report relates to fine-cut stones as per Rapaport Specification A3 or better (click here for more about Rapaport Specifications). While medium-cut diamonds often trade at a slight discount to fine-cut stones, poorly cut stones can trade at very high discounts. Prices for fancy shape stones are highly dependent on the overall shape and the quality of cut, with very large discounts for poorly shaped or cut fancies.

The Rapaport Price List is based on Rapaport Specification A3 or better stones without strong or medium fluorescence. Please Note: Rapaport specifications cannot replace the human factor in evaluating cut grade. Off-center culets, nonsymmetrical facet junctions, very wavy girdles, large naturals, crown angle comments, pavilion percentages, and the relationship between depth, table, crown, and pavilion are all factors that affect cut. Fluorescence and graining may also impact market price. The effect of cut on price is highly specific to particular stones and buyers. It is often subjective and varies according to market conditions. The specifications sheet is based on the opinion of Rapaport regarding current market conditions and is subject to change without prior notice.

Additionally, characteristics like fluorescence and graining can impact a diamond's market price. The effect of cut on price is highly specific to individual stones and buyers, often subjective and dependent on current market conditions. The specifications sheet reflects Rapaport's assessment based on prevailing market trends and is subject to change without prior notice.

In some instances, high color diamonds are adversely affected by strong and medium fluorescence, which give the stones a milky white appearance. In recent years, buyers have discriminated against fluorescent stones even when there is no milky white appearance. This may be because fluorescence makes the stone's face-up color look better and some labs have a tendency to upgrade the color for these stones. For lower J to M color stones, fluorescence may have a beneficial impact on color and may help the stone bring better prices. In some markets, such as Singapore, the right type of fluorescent stones can bring premium prices.The Price List is based on stones without strong or medium fluorescence. The table on the right presents estimates of discounts and premiums for fluorescent stones.

Our Price List reflects the value of stones that are accurately graded. Except for SI3, the price list is based on Gemological Institute of America (GIA) grading standards. Stones customarily lab graded by the trade (0.50+, D to K, IF to VS2) are priced based on their having GIA reports. Prices for smaller and lower-quality diamonds are based on honest grading. Stones with non-GIA certificates may trade at discounts to stones with GIA reports.

CAUTION: Diamond grading laboratories use subjective methods of analysis. The same diamond may be evaluated differently each time it is submitted to a laboratory. The accuracy of a grading report, its authenticity, date, and the lab that issued the report can all have an impact on value. Readers should be familiar with GIA terminology and grading standards to use the Price List effectively.