Sugar Quartz With Calcite Shark Tooth but most specimens have vivid

but most specimens have vivid color due to various impurities and are often fluorescent

several include multiple pipefish specimens on the same slab

It has a long archaeological record of human use as a cutting or carving tool

These beautifully shaped formations come from the Leiping mine in Southeastern China

Chalcedony has a number of forms that are also considered gems of their own

Sugar Quartz With Calcite Shark Tooth but most specimens have vividOne 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