In this site we discuss issues about practical aspects of science for gemstones - Gemology. The information includes: knowledge about gemological materials; identification characteristics of natural and synthetic gemstones; methods and equipment for gemstone identification and grading; treatment; types of composite materials; deposits; news.

The information is intended for both students studying gemstone identification and grading and for appraisers, jewelers, dealers, pawnbrokers, hobbyists and collectors of minerals.

Feedback is established for consultations, sharing information and questions.

The site is an opportunity to cooperate people with interests in the field of identification and grading of gemstones and to support with information their hobby or professional activity.

GIA diamond synthesis

Ongoing research program on synthetic diamonds - CVD growth facility in GIA

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New 3-D software for pearls identification

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Diamond testers

Something about diamond testers

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