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Also referred to as “black malachite” psilomelane (pronounced si-loh’-m...

Zebra Stone, known to many for its zebra-like patterns of dark re...

Trilobites were among the early arthropods (invertebrate animals ...

Quartz is one of the most abundant minerals in the earth’s crust,...

Also, known as the “Fairy Cross”, staurolite is famous for its brown to black, opaque cross-sh...

Many meteorites, like Pallasites or the Gibeon meteorite, are sliced be...