Gemmology
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Rock crystal — specimen 0246, photo © NMNHS
Rock crystal — specimen 0246, photo © NMNHS

Rock crystalspecimen 0246

Origin

no locality data
Data

Weight: 1.70 ct; size: 8.61 | 5.91 | 5.43 mm; shape: octagon; colour: colourless; clarity: eye clean; cut: excellent; treatment: none.
Notes

Very clean specimen; angles [skipping after 45 in the crown] as in ‘Opposing Corners 15’ by Robert H. Long, excellent cut by Tan Pen.

Other specimens
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More information from ‘Classification’


A transparent colourless variety of quartz.