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Chrysoprase
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Chrysoprase — specimen 0465, photo © NMNHS
Chrysoprase
—
specimen 0465
Origin
no precise locality [Africa]
Data
Weight:
0.61 ct;
size:
6.67 | 5.72 | 3.70 mm;
shape:
oval;
colour:
medium dark very slightly bluish green; strong;
clarity:
translucent;
cut:
excellent;
treatment:
none.
Notes
Clean specimen; design ‘Ovalimixtum ST’, excellent cut by Tan Pen.
Other specimens
More information from ‘Classification’
Chrysoprase
A green variety of chalcedony. The colour is caused by tiny inclusions of Ni-bearing layers silicates.
Gemmology — gemstones
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