Zebradorite Sphere 55mm).You will receive  50mm Zebradorite with this order.For more information, please call a Madagascar Mineralsï¿½ sales representative at (520) 882-8884. Zebradorite is a graphic quartz. Rural miners in Madagascar came across this variety of Feldspar which they called (in French and Malagasy) "Feldspath". $24.72/lb. It's better to buy your Zebradorite products from your direct source of Zebradorite.