Prehnite 3x4mm Rondelle Faceted A Grade - 15-16 Inch Lantern Weight: grams: 85-230 grams

Weight: grams: 85-230 grams

and was prized in ancient times for the ultramarine dye derived from it

but rather a dark variety of Carnelian

the mineral was named for French paleontologist Eugene Durmortier (1803-1873)

while maintaining the wood's original structure

Prehnite 3x4mm Rondelle Faceted A Grade - 15-16 Inch Lantern Weight: grams: 85-230 gramsPrehnite 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.