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.


Garnets from the Sakar Region, SE Bulgaria. The relationship between chemical composition and physical properties with emphasis on use in the abrasive industry

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Glass beads from Dren-Delyan necropolis (archaeological and chemical study)

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Mineralogical and petrographic analysis of malachite containing samples.-In: Sarnevo. Pits from the Late Neolithic, the Early and Late Iron Age, and the Roman Period

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