Gem Type: Rainbow Crystal

The Fluorapatite crystal sits nearly vertically in the orange pink calcite and is terminated on one side

Yates Mine

Dimensions: 55x37x11 mm / 2

Color: Fine Sky Blue

Ammolite Gem | Ammonite | Fancy Cabochon | 35.6x20.5mm 48.85ct | Canada SaU 001 Gem Type: Rainbow CrystalAmmolite is an opal like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America. It is made of the fossilized shells of ammonites, which in turn are composed primarily of aragonite, the same mineral contained in nacre, with a microstructure inherited from the shell. It is one of few biogenic gemstones; others include amber and pearl. In 1981, the same year commercial mining of ammolite began, ammolite was