Aventurine may take its name from the Italian a ventura meaning randomly and describes the random flakes of mica in this gemstone. Â Natural green aventurine, a variety of translucent quartz, derives its color from minor inclusions of unoxidized iron minerals. Aventurine also comes in blue and peach colors. Â Green aventurine is often referred to as the Gamblers Stone. Wearing cheap Green Aventurine Jewelry is thought to help those who enjoy games of chance and attract money and luck to the wearer.