Diamond

Composed of pure carbon, diamonds are the hardest known material. Because of this they are indispensable to industry. Diamonds are also valuable to geologists, who learn from them about the conditions in the interior of the earth. To a geologist, diamonds are reminders of the tremendous temperatures and pressures within our dynamic planet. Only about one-third of diamonds found are big enough to be cut into gems.

Group: Native Elements
Catalog Number: 170271
Locality: Argyle Diamond District , Australia