Iridescent Calcite Specimen - Oskaloosa, USA #3 Location_Tanzania blues and white but does

blues and white but does not display any flash or 'fire'

The pink colouring comes from Hematite inclusions in the crystals

Rare Cervical Vertebra from a Spinosaur Dinosaur (Spinosaurus sp

Lepidolite hand selected freeform from Madagascar with beautiful colour

Iridescent Calcite Specimen - Oskaloosa, USA #3 Location_Tanzania blues and white but doesThis beautiful iridescent Calcite specimen is from Oskaloosa, Iowa, USA and has gorgeous iridescent crystals giving a colourful sheen, caused by a thin film of Goethite coating the Calcite. You will receive the exact Calcite crystal pictured. Calcite is found all over the world in a variety of forms and colours, often in combination with other minerals. The more common forms of Calcite are Orange, Blue, Green and Yellow, Iceland Spar is a clear double