Genuine Tanzanite Round or Oval Shaped StudsGenuine Tanzanite Round or Oval Shaped Studs by Valencia Gems these will be your go to item. They will match every outfit so slip these on when you want to add a little sparkle to your day. Features: Stud earrings with a butterfly post Stone type: tanzanite Total number of stones: 2 per pair Total carat weight: 2. 00 CTWW Stone treatment: genuine Birthstone of the month: December Metal: solid sterling silver Available with your choice of Oval or Round