Aventurine is mainly quartz, a quartzite, usually containing mica. It occurs in several colors including green, red and blue.

Green Aventurine is the stone of luck and chance. It is said to increase perception and creative insight. It is a heart chakra  stone.

Blue Aventurine is an Aries stone that opens the third eye chakra.  It is a powerful mental healer that increases vitality and a positive outlook. This stone assists in self-discipline and developing inner strength.

Yellow Aventurine opens the Third eye chakra. It is often used to balance emotions and male/female energies.

Red Aventurine opens the Root chakra.  It can assist in creativity, and help you to see the possibilities in new opportunities.

It is used to aid nearsightedness. Aventurine has a stabilizing effect on the emotions. It is excellent for teenagers.