1.50 ct. t.w. round cut white gold diamond earring stud=0.75p/stud on ear, 3 prong Martini setting. 1 carat weight=200mg so 1 carat=100 points. Round cut boasts 58 facets & maintains large percentage of diamond's weight. Round cut captures stone's symmetrical shape, light, natural fire, brilliance, sparkle! *Round cut more expensive & shows greater brilliance than princess cut-square & can snag more due to the 4 corners. 14k gold stronger than 18k yet 18k has more gold.