K.Mita's 1.31ct Bi-Color Green Tourmaline Geo Ring, which is handmade from 18 Karat Yellow Gold, features a blue-green Bi-Color Green Tourmaline accented with a 0.04 Carat side Diamond set in 18 Karat Palladium White Gold. The Bi-Color Green Tourmaline's color is natural with no treatment. The artist's signature Dune Texture runs all the way around the ring. Ring size 6.25. Widest width 11.5 mm, shank width 8mm to 4mm (at the bottom). One of a kind.