Green 5 Carat Tourmaline & .55 CT. Diamond Channel, Yellow Gold Ring12.49-9.10 x 6.42 mm oval shaped tourmaline measuring 5 carats.Brilliant deep colored green with good light refraction (6) round brilliant diamonds 2.90 mm in diameter weighing .55 carat. Quality of the diamonds are SI2 clarity and H-I color.GIA gemologist inspected and evaluated