Birks 18kt Yellow Gold, Diamond and Mother of Pearl Stud Earrings.Birks Ladies 18kt yellow gold, diamonds and Mother of Pearl stud earrings. These earrings feature 3 curved sections tapering down toward the bottom of the lobe. They are set with 18kt yellow gold and then Mother of Pearl inlay. Also 6 x 0. 20 total carat weight of Brilliant cut diamonds. These earrings weigh: 18. 21 grams. They measure: 21mm (L) x 17mm (W) at the largest point and tapering to 11mm. Post and secure omega back closure. Elegant and