Banded Onyx Calcite Heart Dish (16 CM) Menu Museum These minerals harden in a

These minerals harden in a similar process to agate

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Banded Onyx Calcite Heart Dish (16 CM) Menu Museum These minerals harden in aUniqueness Guaranteed: Every item is one of a kind, making them ideal for all projects or designs. Listing is for (1 Piece) Avg Size Range: (6 to 6. 5 Inches) Sizes Vary Material Origin: (Morocco) Despite the name, onyx is actually an aggregate variety of calcite that was recently found in Pakistan. It is formed from layers of different calcite marbled together. Onyx Calcite is a striking variety of calcite that exhibits beautiful banding, often