Blue Diamond Solitaire Ring 14kt Two-tone Gold. ¬†This is a beautiful 14kt two-tone gold ring set with an irradiated blue diamond (1.53cts). The solitaire style ring contains a round brilliant cut irradiated blue diamond. The clarity is I2 with a dark, strong greenish-blue color, color enhanced by irradiation. The ring,¬†size 6 ¬Ĺ, was cast, assembled and handset with a bright polished finish. It is in very good¬†condition and comes with an insurance appraisal of $4675.00.