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 […]

Minerals, Free Full-Text

NPS Geodiversity Atlas—Colorado National Monument, Colorado (U.S. National Park Service)

What are diamonds? - Colorado Geological Survey

The Grand Canyon region, showing locations of gaging stations and

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

Russia's Crater of Diamonds

Rare African plant signals diamonds beneath the soil, Science

Preliminary report on diamond-drill exploration on Outlaw Mesa, Mesa County, Colorado - UNT Digital Library

Gemstones - Colorado Geological Survey

US Diamond Mines - Diamond Mining in the United States

Dinosaur Diamond Scenic Byway

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Finding Colorado's First Bona Fide Diamond Deposit! : Denver Museum of Nature & Science