Rapaport Specifications—commonly referred to as RapSpecs—classify round, laboratory-graded diamonds into quality groups based on cut, measurements, finish, and other physical traits. They help buyers and sellers quickly evaluate and sort diamonds.
How RapSpecs Work
Grades: A, B, or C, with subdivisions like A1, A2, A3 (best to lower).
GIA-Only: Specs beginning with a letter (A/B/C) apply only to GIA-graded diamonds.
Non-GIA: Have numeric RapSpecs (1, 2, or 3), based on broader criteria.
Source Data: Derived from the diamond’s grading report and seller/lab inputs (e.g., brown tint).
The Rapaport Price List is based on diamonds with RapSpec A3 or better.
How to Search by RapSpec on RapNet
Use the RapSpec filter in the diamond search engine.
Choose a saved search for a specific RapSpec or select multiple RapSpecs for broader results.
More Diamond Pricing Tools
Visit the RapNet diamond pricing tools page to learn more ways to make diamond pricing easier for you and your customers.