Prehnite 4mm Round AAA Grade - 15-16 Inch R1630 but a form of natural

but a form of natural Serpentine which is commonly referred to as Yellow Jade in the stone industry

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

with inclusions of white to colorless translucent or transparent

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

Prehnite 4mm Round AAA Grade - 15-16 Inch R1630 but a form of naturalPrehnite 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.