There are many different varieties of quartz, several of which are semi precious gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Europe and the Middle East.
Gangue minerals associated with quartz in these low temperature deposits include calcite, adularia, sericite, alunite and similar minerals. This category is typified by gold bearing quartz veins like those of the Comstock Lode at ia City and at Tonopah in Nevada, at Bodie in California, and northwestern Hungary in Europe.
Quartz mines. Victoria Quartz mine, Bendigo, Victoria, Australia Central Deborah Gold Mine, Bendigo (The mine still stands today. Mining began in 1938, and was continuous for 16 years. It was a deep reef quartz goldmine.
These mines include: Easter Blue, Bunker Hill, Royal Blue, and Oscar Wehrend. Especially relevant, the Royal Blue mine is responsible for most of the turquoise from the area and is sometimes people refer to it as Royston Royal Blue Turquoise. The Royston mine produces turquoise ranging in color from dark green to deep sky blue.
Quartz is one of the most common and varied minerals on earth, and its abundant colors produce many gemstone types. Amethyst and Citrine are the most popular and valuable gem varieties of Quartz, but other forms also make important gemstones. Chalcedony describes any form of Quartz that is microcrystalline, in compact form without any visible crystals.
Quartz occurs in many different shapes and colors throughout the Herkimer mining district. On this page you will find photos of the different types of quartz, along with links to more detailed photos and explanations.