Pretty Amethyst with Freshwater Pearls Necklace Lovely necklace also has cultured freshwater pink pearls every 5.5 inches. Pearls measure 11-12 mm. Pearls are AA quality. Two 14-karat yellow gold beads at its two sides add a most elegant effect. You can wear it at any occasion, the long 36-inch length is just what fashion stated is right.