Macy's sterling silver blue diamond stud earrings 1/4 ct. tw. Originally purchased 2013. Pave setting. Excellent condition, worn only a few times. No box ** Not your average diamond earrings. This unique stud-earring style features single-cut blue diamonds (1/4 ct. t.w.) for a colorful splash. Set in sterling silver. Approximate diameter: 1/3 inch