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Weight: 1.62 ct
Size: 9.9 x 7.1 x 4.0 mm
This type of quartz was first discovered in 2006 in Minas Gerais, Brazil, with the vein producing only several kilograms of material suitable for faceting.
Due to a very reduced amount of rough material, “sunset quartz” became a true unique stone destinated to gem collectors.
The yellowish and orange color of the quartz is the result of microscopic needle-like inclusions.
To produce this attractive color, the material is heat treated.
The description and study of “sunset quartz”, was published in Gems&Gemology, 2006, Vol. 42, Issue 4, p. 277: http://www.gia.edu/Winter-2006-Gem-News-International
Also about “sunset quartz” on Gemologyproject.com
Cut: oval, faceted
Origin: Minas Gerais, Brazil