Introduction to Agate Pendant

Agate is also called as code onyx, onyx, horse brain, etc. It is a kind of chalcedony minerals. Agate is often a banded block mixed with opal and cryptocrystalline quartz. The hardness is 6.5-7 degrees, the specific gravity is 2.65. Agate is translucent or opaque, and the original shape is a trigonal crystal system, which …

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