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Alexandrite

Tsarstone collectors guide

gemstones

101. Hardness
The quality of resistance or property of minerals, gemstones, etc., which is determined by reference to an empirical scale of standard of minerals. Hardness is the resistance of a mineral offered to abrasion or scratching (scelerometric). The absolute har
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102. Gubelin Gemological Laboratories
Dr. Eduard J. Gubelin, one of the forefathers of modern gemology, and who was a Founding Organizing Member as well as an Honorary Member of the International Colored Gemstone Association (ICA), passed away in Lucerne, Switzerland in March at the age of 91
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103. Glossary of Terms for Alexandrite Gemstone Buyer and Collector's Guide
Glossary of terms that have been discussed or mentioned at Alexandrite gemstone buyer and collectors guide
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104. Gemsuite
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105. Gemstone cuts
Any forms or styles used in the fashioning of gemstones such as antique cut, brilliant cut, emerald cut, baguette, cabochon, rose cut, etc.
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106. Gemstone
Any rough mineral or other material natural or synthetic, which possesses the necessary attractiveness, brilliance, beauty, rarity, color dispersion, refraction, color or colorless, flawless, portability, fashionably, and durability for use in gem industr
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107. GemResearch Swisslab
Private gemological research company focused on the characterization of high-quality gems from newly opened mines.
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108. Gemmy Color Change Alexandrite Oval 5.08cts.
Extremely rare Alexandrite (Chrysoberyl) Oval 5.08cts from Tanzania (Tunduru)
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109. Gem Studies Lab
GAA was formed in Sydney, on the 29th October 1945, the Association has been responsible for producing Australia’s gemmologists by educating and updating members of the gem and jewellery industry and the general public, about all aspects of gemstones an
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110. Gem Cut 11.7x8mm Chrysoberyl Oval 4.53cts.
Hard to find Chrysoberyl (Chrysoberyl) Oval 4.53cts from Tanzania (Tunduru)
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