LULU Earrings. Brand new from Touchstone Crystal by Swarovski. 1" long. Stone 1/2" diameter. Dark Purple/Tanzanite Authentic Swarovski Crystal Rhodium plating. The genuine Swarovski Tanzanite/Dark Purple Crystals in these TCS lulu style (round) earrings are gorgeous as the drop earring style catches the light & the eye from every angle. They are light weight and incredibly comfortable to wear all day & well into the night.