Gemmology
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Rock crystal — specimen 0191, photo © NMNHS
Rock crystal — specimen 0191, photo © NMNHS

Rock crystalspecimen 0191

Origin

no precise locality [Africa]
Data

Weight: 1.36 ct; size: 7.54 | 7.53 | 4.68 mm; shape: octagon; colour: colourless; clarity: eye clean; cut: excellent; treatment: none.
Notes

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

Other specimens
Rock crystal — specimen 0408Rock crystal — specimen 0379Rock crystal — specimen 0589Rock crystal — specimen 0172Rock crystal — specimen 0291Rock crystal — specimen 0316Rock crystal — specimen 0189Rock crystal — specimen 0752Rock crystal — specimen 0420Rock crystal — specimen 0300Rock crystal — specimen 0197Rock crystal — specimen 0301Rock crystal — specimen 0206Rock crystal — specimen 0303Rock crystal — specimen 0304Rock crystal — specimen 0680Rock crystal — specimen 0709Rock crystal — specimen 0246

More information from ‘Classification’


A transparent colourless variety of quartz.