Linda’s sapphire, 1.2 cts, faceted by Hashnu Stones &amp; Gems Studio. Gem design, “Beyond My Imagination,” by Jim Perkins. © Hashnu Stones &amp; Gems. Used with permission.

Sapphire | Yellow | 1.2 ct - International Gem Society

Sapphire id-m-217946 - International Gem Society

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Sapphire | Yellow | 1.2 ct

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Corundum

Sapphire

Linda's <a href="https://www.gemsociety.org/article/sapphire-jewelry-and-gemstone-information/" data-wpel-link="internal">sapphire</a>, 1.2 cts, faceted by Hashnu Stones & Gems Studio. Gem design, "Beyond My Imagination," by Jim Perkins. © <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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In 2012, Donald Clark retired and passed along stewardship of the IGS to the Rosen family, who were longtime members of IGS. Lisa Rosen runs the day-to-day operation of IGS and  <a href="https://www.ganoksin.com/">The Ganoksin Project, a technical resource website for bench jewelers and jewelry manufacturers</a>.  Lisa strongly believes that IGS must remain a cost-effective, accurate, and comprehensive resource for all those interested in gemology. IGS is our passion, and it is a family business.

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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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Bear Williams, CG, FGA (Hon), is President and Laboratory Director at <a href="https://stonegrouplabs.com/">Stone Group Laboratories</a>. Bear travels to gem producing countries and treating regions researching the latest trends in gemology and visiting with other lab directors. On-site research allows him to keep abreast of new synthetics and treatments in the marketplace. He regularly meets with other gemological associations and labs, and together will present research findings, and discuss the latest nomenclature or laboratory issues relevant to the trade and consumers. Recognized as an expert in the field of digital spectroscopy, Bear operates UV-Vis-NIR, ED-XRF, FTIR, UV, and Raman Spectrometers.

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Gemstone	Corundum, Sapphire
Natural or man made	Natural
Carat Weight	1.2
Gem State	Faceted
Color	Yellow
Transparency	Transparent