Prehnite 4mm Coin Faceted A Grade - 15-16 Inch Xinjiang creating veins and mottling that

creating veins and mottling that ranges in color from rust to black

Each stone is unique in terms of its patterns

especially in Asian cultures

Fossil Coral is the prehistoric fossilized remains of the invertebrate reef builders that live in tropical oceans

or black and can be distributed randomly or in bundles or star to like formations

Prehnite 4mm Coin Faceted A Grade - 15-16 Inch Xinjiang creating veins and mottling thatPrehnite was the first mineral to be named after a person: its discoverer, Dutch Colonel Hendrik Von Prehn. Von Prehn discovered the stone in South Africa in 1774. Prehnite is translucent to transparent, in colors from light green to yellow green to olive, with occasional inclusions of Black Tourmaline that crisscross the stone in fibrous patterns. It is a phyllosilicate composed of silicon, calcium and aluminum with trace amounts of iron.