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Rock crystal
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Rock crystal — specimen 0191, photo © NMNHS
Rock crystal
—
specimen 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
More specimens
More information from ‘Classification’
Rock crystal
A transparent colourless variety of quartz.
Gemmology — gemstones
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