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 […]

Diamonds - Colorado Geological Survey

Diamonds - Colorado Geological Survey

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

A Quadrillion Tons Of Diamonds Lurk Deep Inside Earth

Time Machine Tuesday: Diamonds in Colorado – Colorado Virtual Library

Mineral inclusions in diamonds from the Sloan diatremes, Colorado-Wyoming State Line kimberlite district. North America

A Quadrillion Tons Of Diamonds Lurk Deep Inside Earth

Wyoming Diamond & Gemstone Province: How to Identify Diamonds in Nature

What are diamonds? - Colorado Geological Survey

RockTalk: Diamonds in Colorado - Colorado Geological Survey

The Hope Diamond's Colorado Connection – Colorado Virtual Library

Just the Facts: Colorado's diamond deposit (column)

Diamonds - Colorado Geological Survey

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