Oval Portuguese-cut rubellite, 17.28 cts, 17.0 x 15.0 x 11 mm, Jos Plateau, Nigeria. © Rob Lavinsky, www.iRocks.com. Used with permission.

Rubellite | Purple | 17.28 ct

Rubellite id-m-417159 - International Gem Society

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Rubellite

Tourmaline

<a href="https://www.irocks.com/minerals/specimen/38426" data-wpel-link="external" target="_blank" rel="external nofollow">Oval Portuguese-cut rubellite</a>, 17.28 cts, 17.0 x 15.0 x 11 mm, Jos Plateau, Nigeria. © Rob Lavinsky, <a href="http://www.irocks.com/" data-wpel-link="external" target="_blank" rel="external nofollow">www.iRocks.com</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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Cara Williams, FGA, is Vice-President and Senior Staff Gemologist at <a href="https://stonegrouplabs.com/">Stone Group Laboratories</a>. Cara is a fellow of the Gemmological Association of Great Britain (Gem-A). She has been a tutor for the prestigious Diploma in Gemmology course for the Gem-A in London for more than 15 years. Growing up in a retail jewelry family with a concentration in colored stones, Cara has been in the wholesale trade since 1986. She brings a lifetime of experience working with gems to the lab, her students, and many published articles.

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Kyrylo Gubariev, Graduate Gemologist (GG, AJP) is a gemologist with a passion for sharing his knowledge with fellow gem lovers. Originally from Ukraine, he is currently based in Bangkok, Thailand.

Gemstone	RubelliteTourmaline,
Natural or man made	Natural
Origin	Nigeria
Origin details	Jos Plateau
Carat Weight	17.28
Height	17
Width	15
Depth	11
Gem State	Faceted
Color	Purple
Transparency	Translucent