Calcite JewelryWhere the name comes from: Latin calx, meaning lime.
Where the stones come from: Found worldwide.
Chemistry: Calcium carbonate, calcite, CaCO3 - is the most stable form of this chemical which also makes limestone, chalk and marble.
Colors: All colours, "earthy" rather than bright.
...and another thing: The largest calcite crystals found came from Iceland and weighed around 250 tonnes.