ASTRID & HANS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY ASTRID & HANS-FRIEDER MICHLER / SCIENCE PHOTO LIBRARY
Quartz crystal from Sentis, Switzerland. Quartz is a member of the silica group of minerals, found in all types of rock & mineral veins. It is one of the commonest minerals of the Earth's crust. Its crystals are usually hexagonal & prismatic.
Model release not required. Property release not required.