Commitment to Confidence
IGI screens every colored stone using state of the art technologies to determine naturally mined, laboratory grown or simulant origin. Experienced graduate gemologists conduct further assessment in controlled conditions, detailing relevant gemological characteristics according to the strictest international system. The presence of any permanent treatments will be noted in the comments section. IGI will not issue full grading reports for diamonds with non-permanent treatments.
Gemstones should only change hands when accompanied by a grading report attesting to quality. Regardless of location or marketplace, an authentic IGI Laboratory Report is the common language of trust and confidence in the gemological world.
How to read an IGI Natural Colored Stone Report
Verify Your Diamond
See a digital copy of your IGI grading report
Learn With Videos
A collection of two-minute videos designed to help shoppers make informed decisions when buying or selling diamonds, gems, and jewelry.
Lab Grown Diamonds
Did you know? Only natural and lab grown diamonds score 10 on the Mohs hardness scale; nothing else comes close.
Learn MoreCarat Weight
Did you know? Diamonds of the same carat weight do not necessarily appear to be the same size.
Color
Did you know? Gemologists perform D to Z color grading with the diamond upside down, viewed through the side.
Learn MoreRelated Reports
Regardless of location or marketplace, an authentic IGI Laboratory Report is the common language of trust and confidence in the gemological world.
All ReportsNatural Diamond Report
IGI Natural Diamond Reports give an accurate assessment of a diamond’s cut, color, clarity and carat weight according to strict international standards.
Lab Grown Diamonds Education
See how laboratory grown diamonds are physically, optically and chemically identical to natural diamonds which formed in the earth.
