Prehnite 4mm Coin Faceted A Grade - 15-16 Inch R0142 Botswana Agate was formed nearly

Botswana Agate was formed nearly 187 million years ago by lava flowing in waves from long faults in the earth

brown and orange

Amazonite is a member of the feldspar family

Moss Agate has been considered a crystal of agricultural abundance and used as a healing stone by tribal priests and as a talisman for warriors

This prompted an alternative name for the gemstone: Princess Blue

Prehnite 4mm Coin Faceted A Grade - 15-16 Inch R0142 Botswana Agate was formed nearlyPrehnite 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.