Geology

Geology

The scientific study of the origin, history, and physical features of the earth.

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Geology > Minerals

lapis lazuli

Geology; Minerals

Opaque to translucent precious gemstone composed mainly of lazurite and calcite. Its name originates from the Persian word "lazhward", which was the name of a place in modern ...

quartz

Geology; Minerals

Quartz is a crystalline rock or mineral composed of silicon dioxide. It is the second most common mineral on the Earth's continental crust and is found in all types of geological ...

diamond

Geology; Minerals

A transparent piece of carbon complex that has been cut, polished, graded, and evaluated, and is valued as a precious gem.

onyx

Geology; Minerals

A chalcedony with alternating black and white bands and is used in making cameos and other middle to high-price range jewelry items.

silver

Geology; Minerals

A soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal that comes in free form and it is often used in coins and ...

platinum

Geology; Minerals

A heavy precious metallic element that is often grey-white and resistant to corroding; it occurs in some nickel and copper ores and is also found native in some deposits.

gold

Geology; Minerals

A soft yellow malleable ductile (trivalent and univalent) metallic element that occurs mainly as nuggets in rocks and alluvial deposits; it does not react with most chemicals but ...