Prehnite 6mm Coin Faceted A Grade - 15-16 Inch 48hr_08152023 a green-colored mineral

a green-colored mineral

Our Noreena Jasper is A Grade

The name comes from the French word for lemon

but rather a dark variety of Carnelian

Prehnite 6mm Coin Faceted A Grade - 15-16 Inch 48hr_08152023 a green-colored mineralPrehnite 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.