Gem Silica Small 3pc Slab R0086 its oldest known use being

its oldest known use being in Egypt more than five thousand years ago

It contains inclusions such as copper and iron

Jade refers to an ornamental mineral

Von Prehn discovered the stone in South Africa in 1774

this stone can be used to ground the wearer during stressful periods

Gem Silica Small 3pc Slab R0086 its oldest known use beingGem Silica is the rarest and highest form of Chrysocolla, crystallized and infused in Quartz. Gem Silica occurs in a vivid blue green color due to the presence of copper in the stone and is free of inclusions of other minerals. It was named and first described by the Greek philosopher and botanist Theosphrastus in 315 BCE.