Prehnite 10x14-13x17mm Faceted Tumble Nugget - 15-16 Inch featured_09252025 **The strand pictured is banded

**The strand pictured is banded but the strand you receive may not be banded

colored by trace amounts of chromium and/or vanadium to range in hue from yellow to green to blue to green

which forms in geodes and is generally found in clusters of crystal points

"Devil Aquamarine" (or "Devil Blue Aquamarine") is a market term for natural aquamarine characterized by deep blue

Our Noreena Jasper is A Grade

Prehnite 10x14-13x17mm Faceted Tumble Nugget - 15-16 Inch featured_09252025 **The strand pictured is bandedPrehnite 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.