Tag archives for crystals

Crystals

Onyx

Onyx is a layered rock comprised of bands of chalcedony, quartz and opal. The name of the rock is derived from the Greek  ὄνυξ, meaning ''fingernail'' - the thin white…
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Crystals

Basalt

Basalt is one of the most common types of rock found on earth, formed by volcanic and sedimentary action. When magma erupts and cools, gases trapped in the lava form…
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