This is an unusually clean stone for a Winza sapphire. Technically, the pink part may actually be ruby since it shows fluorescence under U.V. light. Color: Hot Pink and Royal Blue, Treatment: None, Cut: Step Radiant Freeform, Weight: .67, Dimensions: 7.25 x 4.35. (Information supplied by photo contributor.) &copy; Daniel Stair, CustomGemstones.com

Sapphire | Purple | .67 ct

Sapphire id-g-173374 - International Gem Society

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International Gem Society LLC

Corundum

Sapphire

This is an unusually clean stone for a Winza <a href="https://www.gemsociety.org/article/sapphire-jewelry-and-gemstone-information/" data-wpel-link="internal">sapphire</a>. Technically, the pink part may actually be <a href="https://www.gemsociety.org/article/ruby-jewelry-and-gemstone-information/" data-wpel-link="internal">ruby</a> since it shows fluorescence under U.V. light. Color: Hot Pink and Royal Blue, Treatment: None, Cut: Step Radiant Freeform, Weight: .67, Dimensions: 7.25 x 4.35. (Information supplied by photo contributor.) <a href="http://customgemstones.com/" data-wpel-link="external" rel="nofollow external">© Daniel Stair, CustomGemstones.com</a>

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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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Dr. Gerald Wykoff GG CSM

A geologist, environmental engineer and Caltech graduate, Addison&#8217;s interest in the mesmerizing and beautiful results of earth&#8217;s geological processes began in her elementary school&#8217;s environmental club. When she isn&#8217;t writing about gems and minerals, Addison spends winters studying ancient climates in Iceland and summers hiking the Colorado Rockies.

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The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as <a href="https://rockpeddler.com/product-category/instructional-materials/">Gram Faceting Designs</a>.

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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	CorundumSapphire,
Natural or man made	Natural
Origin	Tanzania
Origin details	Tanzania
Carat Weight	.67
Gem State	Faceted
Faceter	Daniel Stair
Color	Purple
Transparency	Transparent