498 results for quartz

Willow Creek Jasper is a well known semi precious gemstone material that comes from about 15 miles north of Eagle, Idaho, which is northeast of Boise. The mine has been producing material for ...

Imperial Jasper and Royal Imperial Jasper are dense, very fine grained and exceptionally hard jaspers, making them both one of the highly prized porcelain jaspers. Because of their fine grain, po ...

Brazilian Agate and Piranha Agate are some of the most beautiful banded agates ever found. Brazil has the most massive deposits of agate in the world and they are mostly found in southern Brazil.

Collectible rocks and minerals are found in every province and territory in Canada. Canada is the second largest country in the world. It is the world leader in the production of potash and ranks am ...

Mining in India is an important activity and contributes to the economy. The mining sector underwent modernization following the independence of India, although minerals have been mined in the reg ...

Idaho is a great state for rockhounding.  In fact Idaho's nickname is 'The Gem State’. It even has a county known as Gem County. The state also is home to an incredible variety of geolo ...

Crazy Lace Agate is a banded chalcedony (microcrystalline quartz) that is often infused with iron and aluminum. Creamy browns, blacks, grays and golds (and occasional reds and pinks) swirl togethe ...

Nebraska is not a great state for finding gem grade rocks and minerals. Nebraska is a part of the Great Plains, with its plain sloping from northwest to southwest, including rich farmlands in the ea ...

After Quartz, Calcite is the most next common mineral on the face of the Earth, comprising about 4% by weight of the Earth's crust. It is found throughout the world in sedimentary, metamorphic an ...

Pennsylvania is not rich in rocks and minerals, and not very great for rockhounding.  There are very limited public lands, and much of it is hunting grounds. Pennsylvania does not have an ...

Turquoise is probably one of the most recognized semiprecious gemstones in existence. Turquoise has been popular for cabochons since prehistoric times. It is believed to be one of the first gemsto ...

Vermont is not known for gems, but it is known for its marble, serpentine, and other metamorphic rocks. Much of the area of Vermont is broken up by the Green Mountains and, parallel with them in the ...