Aventurine is a translucent to opaque variety of microcrystalline quartz. It may contain small inclusions of shiny minerals which give the stone a sparkling effect known as aventurescence. Inclusions of mica will give a silverish sheen, while inclusions of hematite give a reddish or grayish sparkle. Aventurine ranges in color from green, peach, brown, blue and a creamy green. Aventurine has been used as a lucky talisman and is a popular stone for gamblers.
