Pistachio Calcite obelisk 155mm 465g good luck Twinning results from interruptions during

Twinning results from interruptions during the growth of the crystal

Geode caves

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These colourful tourmalines are members of the Elbaite mineral group

This Clear Topaz crystals on matrix from Pakistan weighs 98ct or 19

Pistachio Calcite obelisk 155mm 465g good luck Twinning results from interruptions duringPistachio Poise This Pistachio Calcite obelisk 155mm weighs 465g. Pistachio is a rarer variety of Caribbean Calcite and is actually Aragonite. It is found in Pakistan. Aragonite is a calcium carbonate mineral, formed in limestone caves and around hot springs. It has the same composition as Calcite, with a more compact structure. It is often recognised as a twinned pseudo hexagonal prismatic crystal. Twinning results from interruptions during the