Turquoise is one of the world's most ancient of gems. Through archeological excavations, it's been revealed that ancient Egyptian royalty wore turquoise jewelry as early as 5500 BC. Turquoise was a ceremonial gem and used as money by Native American tribe in the southwestern United States. The Apache believed that a turquoise attached to a bow or firearm increased the user's accuracy. It has also long been considered a talisman that ensures good health, good fortune and protection from evil.
Turquoise can be translucent to opaque with a color that ranges from light to medium blue or greenish‐blue. It is often mottled or may have veins of matrix running through it.
Turquoise is a gemstone variety unto itself.
Turquoise rates a 5.0‐6.0 on the Mohs scale. Care should be given when wearing turquoise jewelry.
Turquoise is often permeated with wax, epoxy, plastic or colorless oil to improve color and durability. Cavities may be filled with metal‐loaded epoxy, which adds weight and hides any holes in the stone's surface.
Turquoise is one of the traditional birthstones for December.
Turquoise should be stored separately to keep from being scratched by other gemstones. Store them in a lined box or a soft pouch. Avoid steam and ultrasonic cleaners. Clean your turquoise jewelry using warm soapy water and dry with a soft, lint‐free cloth.