Carnelian 8mm Round - 15-16 Inch TIger Iron It is a hard ceramic

It is a hard ceramic in the Beta-Aluminate family

Why Does Turquoise Need to Be Treated you ask

transparent stone

White African Opal is a white to cream to light tan stone with veining of black or gray

Carnelian 8mm Round - 15-16 Inch TIger Iron It is a hard ceramicCarnelian is a glassy, translucent stone that can appear with such bright orange hues that the ancient Egyptians called it the setting sun. Most deep red Carnelian has been heat treated to darken the beautiful orange and red tints that are created by iron oxides in the stone. Ancient warriors wore Carnelian for courage and power, and it has been used throughout history for various purposes, including to ward off illness and the Plague.