Vivid Green Zoisite 50mm gem Sphere. Zoisite is an Epidote silicate mineral and also appears as the precious Tanzanite. Green Zoisite is very popular in jewelry and also as a valued ornamental stone. It has a beautiful semi-translucent, smooth polish and truly captures your attention. Beautifully polished 50mm or 2" sphere comes with the Walnut Finish Oriental Stand shown.