학술논문
Green Lead-Glass-Filled Sapphires.
Document Type
Article
Source
Subject
*GEMOLOGY
*SAPPHIRES
*CRYSTAL glass
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*
Language
ISSN
1355-4565
Abstract
In April 2014, the Gem and Jewelry Institute of Thailand's Gem Testing Laboratory (GIT-GTL) received several rough and cut samples of green leadglass- filled sapphire for examination, and in December 2014 the treater invited GIT to tour his facility. These stones show many characteristics similar to those of previously known cobalt-doped lead-glass-filled blue sapphires: orange and blue flash effects and colour concentrations along filled fissures, flattened gas bubbles trapped within the filler, and chalky blue fluorescence of the filler when viewed with the DiamondView instrument. Chemical analysis of the green glass showed mostly Pb with some Si, minor Cu, and traces of Fe and Cr. The latter three elements could possibly be responsible for the green coloration of the glass filler. [ABSTRACT FROM AUTHOR]