Chalcedony: Properties, Types & Meaning of This Versatile Crystal

Chalcedony is a term used to define a type of quartz crystal. These crystals are usually translucent or somewhat transparent.

Identification

• Chalcedony is a fine-grained type of silica. These fine grains are called cryptocrystalline and are impossible to see with the naked eye.

Types

• Flint, bloodstone, petrified wood, agate, onyx and jasper are all varieties of chalcedony.

Colors

• Chalcedony can occur in many colors and color combinations. They can range from pitch black to deep red.

History

• Early humans used chalcedony to create tools and weapons such as knives and arrowheads. It was also used to make bowls.

Jewelry

• Modern uses of chalcedony are mainly ornamental. Many of the varieties are carved into gems and used as jewelry or decorations.