Prehnite 4mm Coin Faceted A Grade - 15-16 Inch Stone Type_Charoite the other being Diamond

the other being Diamond

Sometimes called the "Black Prince's Ruby" for its role in the English crown

It is highly regarded for its beautiful blue color flecked with gold inclusions of pyrite

Amethyst has long been associated with February

Prehnite 4mm Coin Faceted A Grade - 15-16 Inch Stone Type_Charoite the other being DiamondPrehnite 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.