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Information × Registration Number 0219U001114, 0117U002156 , R & D reports Title An analysis of international practice in the field of gemology and jewelry and the creation of a new classification of precious and ornamental stones harmonized with international rules and standards popup.stage_title Head Geleta O., Tatarintsev V., Registration Date 13-02-2019 Organization State Gemmological Centre of Ukraine popup.description2 The purpose of the work is to conduct an analysis of international practice and develop a classification of valuable and decorative stones, taking into account international experience, to introduce it in domestic law. The study of the nomenclature of precious stones depending on its origin, imitations and substitutes of precious stones, substances and materials of vegetable origin, scientific and practical substantiation of the classification of valuable and decorative stones has been performed. The general classification of expensive and decorative fossils in the world gemology practice has been studied, the draft classification has been established and approved. expensive and decorative stones Product Description popup.authors А. Кічняєв В. Нестеровський В. Татарінцев О. Беліченко О. Гелета О. Горобчишин С.Вижва popup.nrat_date 2020-04-02 Close