Prehnite 8mm Round AAA Grade - 15-16 Inch R1757 Lepidolite has a glassy or

Lepidolite has a glassy or lustrous sheen

Blue Tourmaline ranges in color from green to blue to yellow to green with black

Kyanite is also extremely useful in industrial applications due to its high heat resistance

and those that still exist today have been passed down for generations

Golden Blood Quartz is a clear to milky to white silicon dioxide mineral

Prehnite 8mm Round AAA Grade - 15-16 Inch R1757 Lepidolite has a glassy orPrehnite 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.