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 […]

Making tracks through the Dinosaur Diamond

Diamond - Wikipedia

Gemstones - Colorado Geological Survey

Diamonds (State Line Kimberlite Field, Colorado-Wyoming bo…

Colorado Geology - Colorado Geological Survey Minerals, Rocks and crystals, Crystals minerals

Description of late Pennsylvanian strata from deep diamond drill cores in the southern part of the Illinois Basin by Smith, William Henking: Good+ Paperback (1967) First Edition.

Plastic Deformation: How and Why Are Most Diamonds Slightly Distorted?

Prospecting for Diamond Deposits - The GemHunter's Guide: HOW BLUE IS BLUE GROUND?

Wyoming Diamonds - Geology of Wyoming