African Turquoise 2x4mm Tube Beads - 15-16 Inch R0719 known as sheet silicates because

known as sheet silicates because they form in distinct layers

Sardonyx has a Sard base

Azurite in crystal form is extremely rare and expensive

white and reddish brown in speckles

inclusions of Goethite or Hematite refract the light between the layers of the crystal

African Turquoise 2x4mm Tube Beads - 15-16 Inch R0719 known as sheet silicates becauseAfrican Turquoise is not actually Turquoise, but rather a speckled teal Jasper found in Africa and often treated to simulate the beautiful blue to green associated with true Turquoise. It contains inclusions such as copper and iron, creating veins and mottling that ranges in color from rust to black. Considered a stone of transformation and evolution, it is believed to awaken those who carry it to their highest spiritual purpose.