Prehnite 4mm Round AAA Grade - 15-16 Inch R1630 it is cut and polished

it is cut and polished to look just like a Quartz gemstone

and can range from translucent to opaque

until the 17th century Crystal Quartz was believed to be permanently frozen water

Topaz obtains much of its popularity from its beautiful colors and its status as a birthstone

a mineralogist and jeweler

Prehnite 4mm Round AAA Grade - 15-16 Inch R1630 it is cut and polishedPrehnite 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.