Matte Larvikite 10mm Round Large Hole - 8-inch - CLEARANCE faceted-shapes Gem Silica occurs in a

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

after its type locality

Morganite gets its pink hue from the presence of manganese or cesium in the stone

Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins

but occasionally gabbro comes in oranges and greens

Matte Larvikite 10mm Round Large Hole - 8-inch - CLEARANCE faceted-shapes Gem Silica occurs in aThe name originates from the town of Larvik, Norway where this type of igneous rock is found. Legend has it that it came to the world? s attention in the 1890s when a local geologist saw it glimmering in the moonlight and recommended that it be submitted as a representative stone from Norway to the World? s Fair in Germany. It won 1st price and has been used ever since in sculpture, jewelry, and architecture. It is not a granite, rather a feldspar