Iridescent Calcite Specimen - Oskaloosa, USA #2 green but crystallize differently to give

but crystallize differently to give us different crystals

The Calcite which they form within often leaves an imprint of the surface on the Polyhedral Agates

Talc is the softest known mineral

Celestite is a reasonably soft mineral

Size: 110mm x 60mm

Iridescent Calcite Specimen - Oskaloosa, USA #2 green but crystallize differently to giveThis beautiful iridescent Calcite specimen is from Oskaloosa, Iowa, USA and has gorgeous iridescent druzy like crystals giving a colourful sheen. 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 refractive variety that forms natural