Main index --- Minerals list --- Silicates index Quartz crystal Quartz crystal

Quartz crystals

Quartz has transparent or translucent hexagonal crystals, either with a sharp point, or a flat edge. All edges tend to be sharp and the surfaces smooth. They are often packed together, growing in parallel. Single crystals can be broken off and sold, like these.
Rock crystal Rock crystal

Quartz crystals come in many different sizes. The specimen on the left is also in the photograph on the right, so you can see how big the large crystal is!
Ghost crystal

Ghost crystal

On the left is another crystal formation. A crystal has formed, then stopped, then carried on growing. This forms the "ghost" of a crustal inside.
Herkimer Diamond

Herkimer Diamond

From the specimens on this page, you can see the normal shape of a quartz crystal. This specimen on the right is a Herkimer Diamond. This is NOT a diamond, but a special crystal of quartz, which is double terminated (has a point at both ends). They are found at Little Falls, New York.

Larger pictures of Quartz crystals:

Herkimer diamond.

Quartz

Ghost crystal.

Ghost Quartz