Black Diamond Rose Gold Plated Studs Cross Earrings These are earrings you'll wear again and again, happily. Black diamonds are associated with loyalty, commitment, and strengthening relationships. These earrings are crafted with a 2 mm round-cut Enhanced Black Diamond, prong-set. At 2 grams, the earrings are lightweight yet durable, designed to offer comfort with a butterfly closure. With a width of 9.32 MM Approx and a length of 12.12 MM Approx, they are the perfect size for any occasion.