Moon’s clear quartz, 3.9 cts, faceted by Hashnu Stones &amp; Gems Studio. Gem design, “Triple Table Variation,” by Mark Oros. © Hashnu Stones &amp; Gems. Used with permission.

Rock Crystal | Blue | 3.9 ct

Rock Crystal id-m-217952 - International Gem Society

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Quartz

Rock Crystal

<a href="https://www.gemsociety.org/article/story-gemstone-faceting-equipment/" data-wpel-link="internal">Moon's clear quartz</a>, 3.9 cts, faceted by Hashnu Stones & Gems Studio. Gem design, "Triple Table Variation," by Mark Oros. © <a href="http://www.hashnustones.com" data-wpel-link="external" target="_blank" rel="external nofollow">Hashnu Stones & Gems</a>. Used with permission.

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The late Donald Clark, CSM founded the International Gem Society in 1998. Donald started in the gem and jewelry industry in 1976. He received his formal gemology training from the Gemological Institute of America (GIA) and the American Society of Gemcutters (ASG). The letters &#8220;CSM&#8221; after his name stood for Certified Supreme Master Gemcutter, a designation of Wykoff&#8217;s ASG which has often been referred to as the doctorate of gem cutting. The American Society of Gemcutters only had 54 people reach this level. Along with dozens of articles for leading trade magazines, Donald authored the book &#8220;Modern Faceting, the Easy Way.&#8221;

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Gemstone	QuartzRock Crystal,
Natural or man made	Natural
Carat Weight	3.9
Gem State	Faceted
Color	Blue
Transparency	Transparent