Shop › Royston Turquoise TC#63 Image 1 of 1 Royston Turquoise TC#63 $35.00 Pair of stabilized Royston turquoise cabochons. Backed with black epoxy and ready to be set in jewelry. Add To Cart Added! Pair of stabilized Royston turquoise cabochons. Backed with black epoxy and ready to be set in jewelry.