Aventurine is a stone of microcrystalline quartz. Any mice inclusions give the Aventurine stone a more silvery look to it. The Green Aventurine stone is native to India, Chile, Spain, Russia, Brazil, Austria, and Tanzania. It is thought to improve a person's near-sightedness, as well as being a gambler's stone. Is the stone which pretends to Libra, it is also the planetary stone of Taurus.
The name "Onyx" is derived from the Greek word onyx, which means "of a finger' or "claw." A Greek legend says that the Onyx stone came from Cupid clipping some of Venus nails. The clippings fell to the ground and were turned into the Onyx stone due to the fact that no part of a god can die. Onyx is chalcedony quartz that is usually found in Brazil, California, Uruguay, and India.