Aventurine is a variety of mineral, usually quartz or feldspar, which is spangled with bright particles of mica and hematite. The most common color is green.

Aventurine is said to aid in the release of anxieties and fears, promoting emotional tranquility and positive attitudes towards life. It is also thought to enhance leadership qualities and reinforce decisiveness. It is considered to be helpful in treating disorders of the heart, lungs, adrenal glands and the muscular and urogenital systems. It has also been useful in the treatment of eyesight and hair problems.