Sphalerites, like this 5.68-ct gem from Colorado, are pyroelectric. When heated, they generate an electrical current. Pyroelectricity is one of the gemstone physical properties covered in this article. © The Gem Trader. Used with permission.

Sphalerite - Natural, Faceted, Yellow, 5.68 ct - International Gem Society

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Sphalerite – Natural, Faceted, Yellow, 5.68 ct

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Sphalerite

Sphalerites, like <a href="https://www.thegemtrader.com/gems-ruby-sapphire/568-ct-colorado-sphalerite" data-wpel-link="external" target="_blank" rel="external noopener nofollow">this 5.68-ct gem from Colorado</a>, are pyroelectric. When heated, they generate an electrical current. Pyroelectricity is one of the gemstone physical properties covered in this article. © <a href="https://www.thegemtrader.com/" data-wpel-link="external" target="_blank" rel="external noopener nofollow">The Gem Trader</a>. Used with permission.

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Dr. Gerald Wykoff is GG (Graduate Gemologist), a CSM (Certified Supreme Master gemcutter), educator, and author of several gemology books. He founded the American Society of Gemcutters in the 1980s and served for more than 10 years as the editor of its monthly magazine, American Gemcutter.

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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Kyrylo Gubariev, Graduate Gemologist (GG, AJP)

Jim Buday was born and raised in Wisconsin. He attended college for biology, but realized that he preferred to work with his hands. He became a general contractor and home flipper. Jim then taught himself to cut gems by watching instructional YouTube videos and reading online forums. By 2019, he was confident enough in his skills to pursue selling his work. He founded the Reddit thread, Shinypreciousgems, which now sits at more than 25,000 members. Jim now works with gems and jewelry full time, and has also partnered with several jewelers to offer settings to his gemstone clients. Recently, Jim started creating his own gem designs. In his free time, Jim enjoys the outdoors, working on his land, and is building a house with his girlfriend, Raeanna.

Gemstone	Sphalerite
Natural or man made	Natural
Origin	United States
Origin details	Colorado
Carat Weight	5.68
Gem State	Faceted
Color	Yellow
Transparency	Transparent