Venturine You should never buy a lottery ticket without an Venturine in your left pocket. Lady Luck will be in your left pocket. This is the stone of opportunity. Venturine is known as the stone of chance or luck. If you gamble or play the lotto, keep this stone in your left pocket. Venturine is mainly quartz, a quartzite, usually containing mica. It occurs in several colors including green, red and blue. Green Venturine is the stone of luck and chance. It is said to increase perception and creative insight. It is a heart chakra stone.