Platinum 2.1ct SI2/G Dimond Stud Earrings with Certificates in the box. Retail Appraisal $20 000. This outstanding pair of stud earrings are made from platinum and features 2.1ct round brilliant cut diamonds. The first one is 1.09ct having SI2 clarity and G color. The second is 1.01ct having SI2 clarity and G color.