Green Aventurine (AAA) 6mm Round 8-Inch Cool Stuff Hematite is black to steel

Hematite is black to steel to gray or silver to gray

A manganese carbonate material of the Calcite group

Pink Tourmaline ranges in color from light pink to deep magenta

It is a form of Chrysoberyl

Jade has been used for tens of thousands of years

Green Aventurine (AAA) 6mm Round 8-Inch Cool Stuff Hematite is black to steelGreen Aventurine is a green translucent quartz with glimmering metallic inclusions. Green is the most common color for Aventurine, but it can also occur as orange, brown, yellow, blue or gray. The color of Green Aventurine comes from Fushite particles within the quartz. It is known as the Stone of Opportunity, and thought to be the luckiest of all crystals.