The precious gold metal is being extracted form these gold stones. The color of these gemstones varies from bluish, pinkish, greenish and even whitish and all depend upon the amount and quantity of impurities present in them. These stones are available either in the form of rutilated quartz or tourmalinated quartz. These stones have metallic luster, but they are opaque. The crystals of gold stones are usually found in isometric form. No cleavage is found on the surface of these stones.