.025 Geometric Diamond Stud Earrings 14K White Gold.  These geometric stud earrings feature .025 carats of diamonds in dazzling 14 karat white gold. On each stud, four (4) .003 carat diamonds are channel set in the center of a lozenge, 14k white gold design. These minimal yet modern studs are versatile enough to wear with any outfit, day or night.