Prehnite 4mm Coin Faceted A Grade - 15-16 Inch Stone Type_Charoite which receive their color from

which receive their color from trace amounts of chromium

The name "heliodor" is derived from two Greek words: helios "sun

Selenite is a crystal formed from the mineral gypsum

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

It is believed by some to improve memory and increase analytical skills

Prehnite 4mm Coin Faceted A Grade - 15-16 Inch Stone Type_Charoite which receive their color fromPrehnite 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.