Sapphire and Channel Diamond, Baguette, Ring 18 Karat, 3.35TCWCenter oval shaped blue sapphire measuring 9.20 x 6.08 x 4.80 mm with an estimated weight of 2.35 carats. Diamonds set in double rows on either side (14) princess stones have a total weight of 1.50 carat. Setting width at top of ring is 9.40 mm and made of 18 karat white gold and is a sturdy setting. Ring size is 6.5 GIA Gemologist inspected and evaluated & comes with appraisal for Insurance.