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Amethyst — specimens [gallery view] (Page 3)


A violet variety of quartz. The colour is caused by iron impurities in the 10s to 100s parts per million range.
Amethyst — specimen 0121
0121
Brazil
Amethyst — specimen 0249
0249
Brazil
Amethyst — specimen 0733
0733
Brazil
Amethyst — specimen 0406
0406
no precise locality
Amethyst — specimen 0218
0218
Brazil
Amethyst — specimen 0228
0228
Brazil
Amethyst — specimen 0170
0170
Uruguay
Amethyst — specimen 0336
0336
Bolivia
Amethyst — specimen 0415
0415
Mozambique
Amethyst — specimen 0702
0702
no precise locality

Amethyst — specimens — 31
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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.