DOI: https://doi.org/10.53056/...
СOMPLEX GEMOLOGICAL, PHYSICAL, CHEMICAL ANALYSIS AS WELL AS MICROSCOPIC STUDY OF PRECIOUS ORGANOGENIC MATERIAL (CORALS, IVORY, NACRE)
СOMPLEX GEMOLOGICAL, PHYSICAL, CHEMICAL ANALYSIS AS WELL AS MICROSCOPIC STUDY OF PRECIOUS ORGANOGENIC MATERIAL (CORALS, IVORY, NACRE)
К. Tatarintseva State Gemmological Centre of Ukraine |
О. Belichenkо State Gemmological Centre of Ukraine |
Yu. Gayevsky State Gemmological Centre of Ukraine |
Yu. Ladzhun State Gemmological Centre of Ukraine |
L. Fugol State Gemmological Centre of Ukraine |
Language: Ukrainian |
Precious and Decorative Stones. No. 4 (98), 2019: 4–9 |
Abstract The results of complex gemological study of corals, ivory, nacre and their substitutes are given in the article. These results include determination of gemological characteristics, measurement of X-ray spectra and microscopic examination. Recent information considering main types of precious corals, ivory, nacre is generalized in accordance with their commercial use as well as treatment types and artificial products are described. |
Keywords: precious organogenic material, corals, ivory, nacre, gemological study. |
References |
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2. CIBJO. The Coral Book. CIBJO standard E 2015-1, 2015-7-1, 37 p. 3. Convention on International Trade in Endangered Species of Wild Fauna and Flora. Signed at Washington, D.C., on 3 March 1973. URL: www.cites.org (date of appeal: 03.12.2019). 4. Tatarintseva К. An overview of international practice in the classification of corals, taking into account their commercial use. Precious and Decorative Stones. 2019. №2 (96). P. 4–8. [in Ukrainian] 5. Tatarintseva К. The research of corals and their imitations of the Ukrainian jewelry market. Modern technologies and features of quarrying, processing and use of natural stone: materials of the Internat.scient.-pract. сonf. (Kyiv, 07–08 Novem. 2019). Kyiv, 2019. P. 12–14. [in Ukrainian] 6. Espinoza, Edgard O'Neil; Mann, Mary-Jacque. The identification guide for ivory and ivory substitutes. 1991. p. 35. URL: https://www.cites.org/sites/default/files/eng/resources/pub/E-Ivory-guide.pdf (date of appeal: 04.12.2019). 7. Манохіна Л., Індутна Т. Nacre. Precious and Decorative Stones. 2001. №3 (25). Р. 31–38. [in Ukrainian] |