State Gemmological Centre of Ukraine (SGCU)

Scientific practical journal «Precious and Decorative Stones». 2021/N 2 (104)

ISSN 2079-1410

Yu.Gayevsky, О.Belichenko.Gemological studies of unheated blue sapphire

DOI: https://doi.org/10.53036/2021-2(104)-1

UDC 549.091+553.823

GEMOLOGICAL STUDIES OF UNHEATED BLUE SAPPHIRE

Yu.Gayevsky, Chief Specialist, State Gemmological Centre of Ukraine, 38–44 Deghtyarivska Str., Kyiv, 04119, Ukraine. E-mail: gud@gems.org.ua

О. Belichenko, Ph.D. (Geol.), Head of the Department, State Gemmological Centre of Ukraine, 38–44 Deghtyarivska Str., Kyiv, 04119, Ukraine, E-mail: lbgems@gmail.com

Language: Ukrainian

Precious and Decorative Stones, № 2 (104), 2020: 4-6

Abstract. Gemological, chemical, physical and optical-microscopic studies of blue sapphire were performed. It was found that the stone was not subjected to heat treatment, as evidenced by the nature of the studied inclusions. It is determined that the chemical composition of the stone indicates its origin from deposits of igneous type.

Keywords: gemological properties, chemical composition, optical-microscopic researches, blue sapphire.

(Recommended by V.Nesterovskiy, Dr Sc. (Geol.), Prof.)

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Full text [in Ukrainian]