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making it an ideal material for drink coasters—condensation easily absorbs into the rock without damaging it
some material can phosphoresce for several minutes
and appears off-white in contrast to the black tourmaline
Native to UK
It can grow blocky points like the larger crystal in this pair
Aragonite and calcite (repaired) Caribbean Calcite making it an ideal materialLocale: Sidi Ayed, Fs Mekns Region, Morocco Approx dimensions: 3. 5 x 2 x 1. 5" Approx size: 285g **Repaired specimen Calcite and aragonite are polymorphs of one another, meaning that the same chemical composition (calcium carbonate) has crystallized into different crystal structures (trigonal and orthorhombic, respectively). Calcite and aragonite often grow together, and the two minerals are also frequent paramorphs of one anothera pseudomorph of the
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