Quartz: The mineral Quartz information and pictures
The Mineral quartz Quartz is one of the most well-known minerals on earth. It occurs in basically all mineral environment s, and is the important constituent of many rock s. Quartz is also the most …
Quartz: The gemstone Quartz information and pictures
The Gemstone Quartz 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 …
Amethyst: The purple Quartz mineral Amethyst information and pictures
Amethyst is a well known mineral and gemstone. It is the purple variety of the mineral Quartz, and its most valuable and prized variety. Its name derives from the Greek "amethystos", which means "not …
Jasper chalcedony: The mineral Jasper information and pictures
Jasper is an opaque form of Chalcedony, which is a microcrystalline variety of the mineral Quartz. It often contains an abundance of impurities, and therefore some regard it as a rock instead of a …
Citrine: The quartz mineral Citrine information and pictures
Citrine is the yellow to brownish-red variety of the mineral Quartz. It is a widely used as a gemstone, and after Amethyst it is the most popular Quartz gem. Most Citrine is formed by heat treating purple …
Amethyst Quartz: The purple gemstone Amethyst information and …
Detailed gem and jewelry information guide about the purple quartz gemstone amethyst.
Gold: The mineral native Gold information and pictures
The ore is often brown, iron-stained rock or massive white Quartz, and usually contains only minute traces of gold. To extract the gold, the ore is crushed, then the gold is separated from the ore by …
Dumortierite: The mineral dumortierite information and picture
Dumortierite often forms as inclusion s in Quartz, and this combination results in a natural blue Quartz gemstone. These are known in the gemstone market as "Dumortierite Quartz" and they are …
Agate chalcedony: The mineral Agate information and pictures
Agate is the banded form of the mineral Chalcedony, which is a microcrystalline variety of Quartz. Agate is the most varied and popular type of Chalcedony, having many varieties on its own. Although the …
Rose quartz: The pink gemstone rose quartz information and pictures
Rose Quartz is a very affordable gemstone. Due to its often hazy color and frequent flaw s, it is more often tumbled or used as beads over faceting into gemstone cuts. A deeper pink color in Rose …