Sugar Quartz With Calcite Amethyst These well preserved and larger-sized

These well preserved and larger-sized fossils originate from the Monterey Formation in California

During the Eocene

resulting from the oxidation of its copper and sulfide components

The unique combination of smoky

Incredible specimens of natural uncut aquamarine from Mount Little Xuebaodong in Sichuan

Sugar Quartz With Calcite Amethyst These well preserved and larger-sizedOne of the most common minerals on earth, Calcite is a form of Calcium Carbonate and is one of the primary components in limestone. It is found in a vast array of forms, from prismatic crystals to fibrous wisps. Calcite is clear naturally but it can be found in a variety of brilliant colors due to the presence of chemical impurities during formation. These large, showy specimens contain chunky calcite crystals of exceptional shape draped within a