What are diamonds? - Colorado Geological Survey

Diamonds are formed from pure carbon, one of the most abundant elements on planet Earth. Diamonds, even from ancient times, have been sought for their extraordinary hardness (they are the hardest substance known) and their brilliance, especially in the colorless transparent gemstone variety. Ironically the other form of pure carbon is graphite, which is very […]

OF-78-05 Geologic Hazards Study in Douglas County, Colorado - Colorado Geological Survey

Colorado River and Diamond Peak, Western Grand Canyon

Diamonds - Colorado Geological Survey

Diamond: Mineral information, data and localities.

The Geology of Diamond Deposits: how they form and how you can prospect for them

Diamond: Mineral information, data and localities.

Diamonds in Virginia

US Diamond Mines - Diamond Mining in the United States

Interim Report on Diamond-Drill Exploration and Plans for Additional Drilling in the Monogram Mesa Area, Montrose County, Colorado - UNT Digital Library

Diamonds - Colorado Geological Survey

Wyoming Diamonds - Geology of Wyoming

The Great Diamond Hoax of 1872, History

Fountains of diamonds erupt from Earth's center as supercontinents break up

Kelsey Lake, State Line Kimberlite Mining District, Larimer County, Colorado, USA

Gemstones - Colorado Geological Survey