Prehnite 8mm Coin Faceted A Grade - 15-16 Inch White Dzi Agate The presence of Manganese within

The presence of Manganese within the stone produces the purple hue

Diamond is a rare

transformation and personal growth

this opal variety is characterized by their dark base tone

Chrysocolla was first described by Theosphrastus

Prehnite 8mm Coin Faceted A Grade - 15-16 Inch White Dzi Agate The presence of Manganese withinPrehnite 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.