DIASPORE MINERAL SPECIMEN 27.10 CTS CG-1697 GC

Item Information

Dimensions (mm) 37.88 x 4.57 x 4.64mm
Weight (carats) 27.1 carats
Colors

DIASPORE MINERAL

RARE MINERAL

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the mineral diaspore, mined in the ─░lbir Mountains of southwest Turkey at an elevation of over 4,000 feet. Depending on its light source, color varies between a yellowish green, light gold, and purplish pink. Its gemological name is diaspore, and it is hydrated aluminum oxide colored by manganese. It was first faceted as a gemstone in the 1980s, but was not commercialy mined until recently.Diaspore has reasonably good gemstone characteristics. It has a hardness of 6.5 to 7 on the Mohs scale, comparable to peridot and tanzanite. It has a refractive index of 1.702 to 1.750, which lies between that of tanzanite and spinel. Diaspore has perfect cleavage in one direction, making it a challenge to cut

13h 10m 29s

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Pricing & Details

Bid Increment $1.00
Starting Bid $90.00
Auction ID 518687
Watchers 2 watching
Viewed 938 times
Starts 26th May 2017 6:12pm PDT
Ends 27th May 2017 6:10pm PDT

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