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Amethyst
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Amethyst — specimen 0415, photo © NMNHS
Amethyst
—
specimen 0415
Origin
East Africa
Mozambique
Data
Weight:
0.67 ct;
size:
6.64 | 5.63 | 4.01 mm;
shape:
oval;
colour:
medium bluish violet; slightly greyish;
clarity:
eye clean;
cut:
excellent;
treatment:
none.
Notes
Very clean specimen; design ‘Ovalimixtum ST’, excellent cut by Tan Pen.
Other specimens
More specimens
More information from ‘Classification’
Amethyst
A violet variety of quartz. The colour is caused by iron impurities in the 10s to 100s parts per million range.
Gemmology — gemstones
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