One electronically tested 18KT yellow gold ladies cast opal and diamond ring with a bright polish finish. The featured opal is set within a diamond floret supported by a ribbed under gallery, completed by a three millimeter wide band. Identified with markings of '750 18K'. Condition is good. Containing: One semi crystal opal that is cut in a oval shaped cabochon and is prong set, measuring 17.10 mm long x 12.10 mm wide, and 3.00 mm thick and the approximate weight is 3.87 carats. The opal has a bright, multicolor play of color (fire) in a flashfire pattern; a low dome; a good cut; slightly included; slight variation in base in its brightness and pattern; and is slightly directional. Graded in the setting. Twenty-Eight prong set round brilliant cut diamonds, measuring 1.80 - 1.80 x 1.08mm (depth est.) approximate total weight of 28 Stones = 0.65ct. The color grade reflects the range of color for this group. Graded in the setting. Clarity SI-2 to I-2. Color: H - K. Total Weight of Diamonds 0.65ct.. Total Weight of Opals 3.87ct.. Total Weight of Ring 7.83gm. AIG Appraised at $4,280.00.