Mix and match or rock these studs on their own! Emerald heart and pear-cut natural Swiss blue topaz stud earrings totaling 4 1/3 ct are crafted in sterling silver for a classic glow you'll love. Emerald-cut pieces measure 5/16 by 3/16 inches. Heart-cut pieces measure 3/16 by 3/16 inches. Pear-cut pieces measure 5/16 by 3/16 inches.