Stunning 1930s 1.00 Carat diamond set in Platinum. 4 accent diamonds flank each side of the center diamond. GIA report # 5181990790, Grading Results are: 1.00 Carat Round Brilliant – Color I – Clarity SI2 – Stone Measurements are 6.57 x 6.62. 3.86 mm. The ring is a size 5.25 right now, but can easily be sized by us or your jeweler.