Independent Research  ·  Rings.com

Diamond Price Index


Free, independent price benchmarks for the diamond market.


Current Indexes

Lab-Grown Diamond

Live  ·  Updated Monthly

US Lab-Grown Diamond Price Index

Median total stone prices for E VS1 Round Excellent IGI-certified lab-grown diamonds across eight major U.S. online retailers.

May 2026  ·  528,819 listings  ·  8 retailers

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Live  ·  Updated Monthly

UK Lab-Grown Diamond Price Index

Median prices per carat for G VS1 Round Excellent IGI-certified lab-grown diamonds across three major UK online retailers. Prices in GBP, inc-VAT.

May 2026  ·  2,706 listings  ·  3 retailers

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Natural Diamond

Coming Soon

US Natural Diamond Price Index

Independent retail price benchmarks for natural diamonds across major U.S. online retailers, using the same methodology as our lab-grown index.

In development

Coming Soon

Coming Soon

UK Natural Diamond Price Index

Independent retail price benchmarks for natural diamonds across major UK online retailers.

In development

Coming Soon