Prehnite 6mm Double Heart Faceted A Grade - 15-16 Inch 5pf4242026 as well as grays

as well as grays

These inclusions are chromite

Named for the village near where it is found in Madagascar

It is one of the most rare and sought after forms of Agate

Rutilated Quartz is a silicon dioxide mineral with unique needle-like inclusions of Rutile

Prehnite 6mm Double Heart Faceted A Grade - 15-16 Inch 5pf4242026 as well as graysPrehnite 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.