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Lot 59
Large Diaspore
7 December 2016, 10:00 PST
Los AngelesUS$1,800 - US$2,500
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Large Diaspore
Turkey
Diaspore is commonly found associated with either corundum or bauxite (aluminum ore). The name diaspore comes from the Greek word diaspora which means "to scatter", because it is known to crackle when heated. Typically colorless, or white, one occasionally sees stones of green or brownish. The tabular, or "platy" prisms which are its natural habit never allow for sizes of faceted gems such as this one. The present example of this rare mineral has been faceted into a large oval-cut stone which exhibits a pleasant greenish color with flashes of red. The species is sometimes seen in the trade with the appellation of "Zultanite". Both the luster and the clarity are excellent. Weighing approximately 32.23 carats and measuring 32.55 x 17.72 x 7.43mm
Diaspore is commonly found associated with either corundum or bauxite (aluminum ore). The name diaspore comes from the Greek word diaspora which means "to scatter", because it is known to crackle when heated. Typically colorless, or white, one occasionally sees stones of green or brownish. The tabular, or "platy" prisms which are its natural habit never allow for sizes of faceted gems such as this one. The present example of this rare mineral has been faceted into a large oval-cut stone which exhibits a pleasant greenish color with flashes of red. The species is sometimes seen in the trade with the appellation of "Zultanite". Both the luster and the clarity are excellent. Weighing approximately 32.23 carats and measuring 32.55 x 17.72 x 7.43mm