One electronically tested 18KT white and yellow gold lady's combination cast & assembled fashion ring with a cushion halo with a bright polish finish. The featured lady's ring has a shank measuring 2.50 millimeters wide. Identified with markings of '18K'. Condition is new, good workmanship. Containing: One prong set emerald modified step cut natural bi-color tourmaline, measuring 18.40 x 13.56 x 8.22mm, (depth est.) 15%. bulge factor, approximate weight of 19.39ct., clarity is eye clean, medium light, moderately strong, slightly yellowish green color, (GIA slyG 4/4), cut is very good. Transmitting light with no distortion, transparent. Colored gemstones are presumed to have been subjected to commonly used enhancement processes. The featured tourmaline has a 70/30 division of color, from yellowish green to light reddish brown. Graded in the setting. Ten channel set emerald cut diamonds, measuring 2.80 x 2.30 x 1.54mm (depth est.) approximate total weight of 10 Stones = 0.92ct. Graded in the setting. Color F - G Clarity VS-1 to VS-2 Cut Very Good Twelve channel set step trapezoid cut diamonds, measuring 2.90 x 2.30 x 1.45mm (depth est.) approximate total weight of 12 Stones = 1.70ct. Graded in the setting. Color F - G Clarity VS-1 to VS-2 Cut Very Good. Total Weight of Colored Stones 19.39ct.. Total Weight of Diamonds 2.62ct.. Total Weight of Ring 11.90gm GAS Appraised at $25275.00. GAS Appraised at $25,275.00.