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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.

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PETROLOGICAL STUDY OF METASOMATIC ALTERED GRANITOIDS FROM KANARATA DEPOSIT, SAKAR MOUNTAIN, SOUTHEASTERN BULGARIA

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Fig_2

Chemical characterization of glass beads from the necropolis of Dren-Delyan (6 th –4 th century BC), Southwest Bulgaria

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Vitov, Tzankova1

Mineralogical mapping and prognosis for garnet deposits in Sakar Mt, SE Bulgaria

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