A Diversity of U.S. Gemstones Gemstones Produced in the U.S. States With Gemstone Production Arizona Arkansas California Colorado Idaho Louisiana Maine Montana Nevada North Carolina Oregon Tennessee Utah Small Mines, Recreational Miners Why Is Production So Low? Patronage for Domestic GemstonesA...
This our favorite book about opal. It clearly describes the many different types of opal in language that is easy to understand in a 6 1/2" x 9 1/4" hardcover with 212 pages.More information, table of contents. Turquoise: Mines, Minerals and Wearable Art ...
Moukaite is found only in mines in Australia. It is also known as Mookite, Mookaite Jasper, and Hicorite Jasper. Moukaite forms in erosion areas of mountains as a filler in cracks. Foreign materials, such as sand, clay and iron, make up the beautiful red, yellow, and orange colors. ...
Australia is the major supplier of Fine Opals and almost 95 per cent of all Opals come from Australian mines. Opal is made from sand and water. It has the same chemical formula as quartz with the addition of 3 to 10 % water content. And due to this reason, opals must be protected fr...
Links to information about American turquoise mines can be found under the turquoise heading on this page. We will continue to add more samples of gemstones in the future. AGATE & Agate Gemstones Agate is a member of the Chalcedony species. It's distinctive concentric, banded, shell-like ...
Azurite:Azurite is a soft, deep blue copper mineral produced by weathering of copper ore deposits and is between 3.5 to 4 on the Mohs hardness scale. In the early 19th century, Azurite was also known as chessylite after the type locality at Chessy-les-Mines near Lyon, France. The blue ...
about 1.5 km below the surface and over a period of millions of years other magma intrusions forced their way into this granite, forcing it up into mountain ranges, remelting it and recrystalizing it to form the amazonite microcline that can be found now in mines at nearly 3000m in ...
Fire agate deposits are found in the areas between Kingman, Arizona and Needles, California, as well as the surrounding areas of the Colorado River.Mexican fire agate comes from the mines of Calvillo in the state of Aguascalientes, Mexico. There are 23 known mines near the mountains of ...
the 1920s, and until the early 1980's, the State was the largest producer in the US. In this era of small turquoise operations, it may again be the largest producer. It is estimated that over the years, more than 100 different mines and prospects located in Nevada have produced ...
[2] The South Western USA is one of the most significant sources of high grade turquoise, with mines in California, Arizona, New Mexico, Nevada and Colorado [1]. Much fine turquoise has also come from China in the last 25 years - although it is said that most of the turquoise reaching...