Diamond, crystal in matrix - Stock Image - C001/4339 - Science Photo Library

Diamond, composed of pure carbon, is the hardest mineral known, and also the most popular gemstone. It occurs in a unique rock known as kimberlite that was created at great depths and high temperature and pressure. JOEL AREM/SCIENCE PHOTO LIBRARY

Herkimer Diamond Crystals on Matrix Handpicked Specimen from Herkimer County, NY

Diamond crystals and matrix specimens Mineral Specimens

Thumbnail Herkimer Diamond Crystal on Matrix - Diamond Acres Mine, NY

Diamond crystals and matrix specimens Mineral Specimens

Diamond, Crystal In Matrix Photograph by Joel E. Arem - Fine Art America

Thumbnail Herkimer Diamond Crystal on Matrix - Diamond Acres Mine, NY

Diamond in Kimberlite - Stock Image - E425/1168 - Science Photo Library

Rough Diamond Crystal In Kimberlite Matrix.

Diamond Crystals (natural diamonds)

Rough Diamond Crystal In Kimberlite Matrix.