This specimen features about a dozen demantoids on a fibrous asbestos matrix. The largest crystal measures about an inch across. 5.5 x 3.7 x 1.2 cm, Val Malenco, Sondrio Province, Lombardy, Italy. © Rob Lavinsky, www.iRocks.com. Used with permission.

Demantoid Garnet | Green - International Gem Society

Demantoid Garnet id-m-474185 - International Gem Society

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Demantoid Garnet | Green

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Garnet

Andradite

Demantoid Garnet

This specimen features about <a href="https://www.irocks.com/minerals/specimen/42317" data-wpel-link="external" target="_blank" rel="external nofollow">a dozen demantoids on a fibrous asbestos matrix</a>. The largest crystal measures about an inch across. 5.5 x 3.7 x 1.2 cm, Val Malenco, Sondrio Province, Lombardy, Italy. © Rob Lavinsky, <a href="https://www.irocks.com/" data-wpel-link="external" target="_blank" rel="external nofollow">www.iRocks.com</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.

Addison Rice

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>.

Jeff R. Graham

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.

Bear Williams

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Cara Williams

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.

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	Garnet, Andradite, Demantoid Garnet
Natural or man made	Natural
Origin	Italy
Origin details	Val Malenco, Sondrio Province, Lombardy
Height	55
Width	37
Depth	12
Gem State	Specimen
Color	Green
Transparency	Translucent