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 […]

Diamond: Mineral information, data and localities.

A Quadrillion Tons Of Diamonds Lurk Deep Inside Earth

Diamonds - Colorado Geological Survey

SP-05A Sand, Gravel, and Quarry Aggregate Resources, Colorado Front Range Counties - Colorado Geological Survey

The biggest, the best, the first, and the most diverse - Colorado Geological Survey

Raton Basin and Southern Rocky Mountains of south-central Colorado

Minerals, Free Full-Text

What are diamonds? - Colorado Geological Survey

Diamonds - Colorado Geological Survey

What are diamonds? - Colorado Geological Survey

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

There Could Be 16 Quadrillion Tons Of Diamonds On The Planet Mercury Suggests New Research

US Diamond Mines - Diamond Mining in the United States