.39 Diamond Earring Studs in 18k White Gold. 39 Diamond Earring Studs in 18k White Gold. These gorgeous stud earrings feature . 39 carats of diamonds on a geometric mounting finished in 18k white gold. Six (6) . 025 carat baguette diamonds are set in sleek channel bars at the centers of the studs. Near colorless and eye clean, the baguettes create a beautiful hall of mirrors light play that catches the eye. Four (4) . 015 carat Round Brilliant cut diamonds are bezel set at the tops and bottoms