Ruby & Diamond 3.08 Carat Cluster, Natural Quality Hallmarked 3.08 carats, this ring consists of (10) high quality rubies measuring 4.85-2.85 x 2.2 mm & (10) round diamond, 1.65 mm in diameter. The ring is hallmarked 3.08 cts.The ring is a size 4 and can be sized for a fee. Ring measures 17 x 15 mm in diameter GIA gemologist inspected and evaluated