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Amethyst
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Amethyst — specimen 0169, photo © NMNHS
Amethyst
—
specimen 0169
Origin
East Africa
Zambia
Data
Weight:
1.51 ct;
size:
7.91 | 7.83 | 4.93 mm;
shape:
octagon;
colour:
very light bluish violet;
clarity:
eye clean;
cut:
excellent;
treatment:
none.
Notes
Very clean specimen; design ‘Octaordinarium’, 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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