Rough Black Kyanite Blades / 1-5" AVG - 1 KILO LOT Menu All Flats or tourmaline

or tourmaline

Ammolite is created when ammonite fossils are buried in layers of sediment that prevent them from turning into calcite

Avg Size Range: (15 to 25 millimeters)

Rough Apatite Medium Flat

illustrating the geological processes of mineral precipitation and crystallization that contribute to its diverse colors and textures

Rough Black Kyanite Blades / 1-5" AVG - 1 KILO LOT Menu All Flats or tourmalineQuantity: 1 kilogram Average size range: 1 to 5 inches Kyanite is an aluminum rich crystal that forms on metamorphic rock under extremely high pressure. Unlike its more traditionally blue, orange, or green hued counterparts, black kyanite also contains inclusions of graphite that have altered the color. These inclusions also affect the crystal formation, which tends toward fan like blades.