Prehnite Natural 8mm Bicone Faceted - 15-16 Inch Gemstone Azurite in crystal form is

Azurite in crystal form is extremely rare and expensive

Most commonly mined in Madagascar

with differing colors associated commonly associated with the corresponding color of one of the eight main chakras

Turquoise is one of the oldest known gemstones

occasionally mingled with rust-brown

Prehnite Natural 8mm Bicone Faceted - 15-16 Inch Gemstone Azurite in crystal form isPrehnite 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.