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QUARTZ COLOR VARIETIES - SiO2<br />
Silicate Hexagonal-Trigonal trapezohedral crystal form. Commonest of minerals. (center) Citrine & Aventurine, (clockwise from top left) Amethyst, Rose quartz, Picture Jasper, Smokey quartz and Rock crystal quartz.

Fphoto-22188810A-2PS.jpg

QUARTZ COLOR VARIETIES - SiO2
Silicate Hexagonal-Trigonal trapezohedral crystal form. Commonest of minerals. (center) Citrine & Aventurine, (clockwise from top left) Amethyst, Rose quartz, Picture Jasper, Smokey quartz and Rock crystal quartz.

Copyright:© 1988 Paul Silverman - Fundamental Photographs

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