Reliable data regularly updated by experts.
The reference for precious gemstone prices
Origin · Quality · Treatments · Price per carat
All origins
Fact sheets by country of origin
Pricing grid by weight (carat)
Price per carat based on the quality of the stone (AAA, AA, A) and its origin.
All origins
Fact sheets by country of origin
Pricing grid by weight (carat)
Price per carat based on the quality of the stone (AAA, AA, A) and its origin.
All origins
Fact sheets by country of origin
Pricing grid by weight (carat)
Price per carat based on the quality of the stone (AAA, AA, A) and its origin.
Origin, characteristics and impact on value.
Heated, oiled, filled and their effects on price.
Complete information on synthetic stones.
Prices updated regularly.
For diamond information and pricing, please refer to Rapaport, the global reference for diamond pricing.
GEM PRICE publishes a per-carat pricing grid for precious gemstones structured around the frameworks of leading international laboratories: GIA (Gemological Institute of America), IGI (International Gemological Institute), SSEF (Swiss Gemmological Institute), Gübelin Gem Lab, AGL (American Gemological Laboratories) and GRS Gemsearch (Gemresearch Swisslab). Prices are cross-referenced with trends observed at major professional shows: Tucson Gem & Mineral Show, AGTA GemFair Tucson, and international mineral shows (Munich, Sainte-Marie-aux-Mines, Hong Kong).
Each fact sheet covers one gem from a single origin: Kashmir, Ceylon (Sri Lanka), Burma (Myanmar), Madagascar or Australian sapphires; Burmese, Mozambican, Tanzanian or Thai rubies; Colombian, Zambian, Ethiopian or Brazilian emeralds. AAA, AA and A qualities are documented, along with common treatments (heated sapphires, oiled emeralds) and the main synthetics (Verneuil, Chatham, Chatham hydrothermal, Kyocera, Kashan).
Visual identification sheets of inclusions help distinguish natural, heated and synthetic stones. Our monthly gemology journal covers recent publications from GIA (Gems & Gemology), Kagem mines (Gemfields), GRS Gemsearch and Gübelin reports, plus trends from the Tucson Gem & Mineral Show and major international mineral shows.
Our data cross-references publications and frameworks from the leading international laboratories:
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