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Smoky quartz — specimen 0359, photo © NMNHS
Smoky quartz — specimen 0359, photo © NMNHS

Smoky quartz — specimen 0359

Origin

South America
Brazil
Smoky quartz — specimen 0359, locality map
Data

Weight: 3.76 ct; size: 9.92 | 9.90 | 7.13 mm; shape: octagon; colour: dark reddish orange; clarity: eye clean; cut: excellent; treatment: none.
Notes

Very clean specimen; design ‘Petal’ by Glenn & Martha Vargas, excellent cut by Tan Pen.

Other specimens
Smoky quartz — specimen 0362Smoky quartz — specimen 0674Smoky quartz — specimen 0251Smoky quartz — specimen 0682Smoky quartz — specimen 0202Smoky quartz — specimen 0204Smoky quartz — specimen 0350Smoky quartz — specimen 0401Smoky quartz — specimen 0719

More information from ‘Classification’

Smoky quartz

Smoky-grey, brown to black quartz coloured by Al-based and irradiation-induced colour centres.


Gemmology — gemstones
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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.