Ruby in Zoisite Specimens Carvings & Gem Boxes If struck sharply against steel

If struck sharply against steel

before being cleaned by hand

Prevalent during the Silurain and Devonian ages

in the Earth's crust and mantle

Ruby in Zoisite Specimens Carvings & Gem Boxes If struck sharply against steelRuby is a rare gemstone variety of Corundum, the other famous variety being Sapphire. Corundum by itself is colorless, being made of only aluminum and oxygen, but Ruby is distinguished by its rich red color. This comes from small amounts of chromium replacing some of the aluminum. Zoisite is a mineral that is found in metamorphic and pegmatitic type rock. Although the largest Zoisite deposits have been found in Tanzania, other finds have been