Prehnite 8mm Double Heart Faceted - 15-16 Inch White Howlite commonly known as Limestone

commonly known as Limestone

and most commonly found with black inclusions

reddish to browns

famed mineralogist and jeweler George Frederick Kunz

It is referenced in many sacred texts and historical manuscripts and is the first precious stone mentioned in the Bible

Prehnite 8mm Double Heart Faceted - 15-16 Inch White Howlite commonly known as LimestonePrehnite 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.