Stunning, Colombian Emerald set in Halo Diamond Ring, 3.38 TCW5.50-7.90 x 5.50 mm Emerald Cut Colombian Emerald is approximately 2.50 carat The rings diamonds are on the shank and halo and measure 1.3 -1.40 mm each with a total weight of estimated .85 carat. The ring is a size 7 finger size. GIA Gemologist inspected and evaluated.