1-carat, diamond-comparison, engagement-ring-india Round vs Oval Solitaire Diamond Comparison India: Which 1 Ct Cut Is Right for You? on Jul 4, 2026 At 1 carat an oval measures about 7.7 x 5.7 mm against a round's 6.5 mm, and usually costs less per carat. Here is when that matters and when the round is still the better ring. Continue Reading