Guaranteed 100% natural purple opal not treated in any way... Expertly hand cut and exclusively made for us... This is a new material is from Africa and was discovered very recently... There is no active mining on this beautiful stone making it hard to find and highly sought after. We're the first company to cut this stone and put it into production!... Each pair of these earrings are carefully hand cut to preserve its unique purple opal streaks and veins... Purple Opal is a stone of renewal and luck.