Poker Chip Mangano Calcite - Bulgaria #7 Popular Crystals_Calcite but it tarnishes to form

but it tarnishes to form beautiful iridescent rainbow colours

Lovely clarity on this peach Topaz crystal from Dasu

usually in limestone

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Poker Chip Mangano Calcite - Bulgaria #7 Popular Crystals_Calcite but it tarnishes to formThis pale pink Mangano Calcite specimen is from Bulgaria with the stacked "pokerchip" style crystals, and reacts under both long and shortwave UV lights. You will receive the exact 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