2.50 Ct. Black Diamond Stud Earrings - Round Cut - 14k Gold or Platinum - By Dara's Diamonds (Push/Friction Back) 2.50 Total Carat Weight, Black Diamond, AAA Clarity 100% Natural and Conflict Free Diamonds. Shop with peace of mind with our full money back 30-day return policy. Need help with this item? Call us toll-free at 1-888-764-DARA (3272). We have different carats, colors, clarities and settings available. Jewelry Gift Box Included For the screw back version, search Amazon for: 47972-W14-S