Cocktail ring with Emerald and diamonds. Beautiful vintage cocktail ring, crafted in solid white gold of 18 karats and embellished with a terrific selection of natural earth mined gemstones. This ring has been made with a classic rectangular shape with one central emerald surrounded by ten very fine diamonds. Diamonds: Mounted in four-prongs settings, with 10 calibrated round brilliant cut diamonds of 25 points, with a total of  2.50 carats, white colorless F color, VS-1 clarity. Emerald: Mount in the center in four prongs, with 1 octagonal step cut (7.59 x 5.88 x 3.70 mm) of a natural Colombian green emerald of 1.22 carats. Note: The emerald is from Colombia, completely translucent, with great color saturation and without any treatment with oil. Birthstone: Emerald for the month of May. Weight: 5.6 Grams, (10.87 Dwt). Size: 6.25 sizeable. Measurements: From the top view is 17 mm by 15 mm (0.67 x 0.59 Inches). Hallmarks Stamped with the maker's mark and the mark for the assay of the gold 18kt. Collateral: This piece is accompanied by the GIA laboratory report number 2225923469, stating the center emerald is natural, transparent and the origin is Colombia. Probably muzo. Collateral: It is accompanied by a presentation jewelry box. Condition: The overall condition of this ring is excellent. Beside the little normal wear, there is no damage to the gold. All gemstones are secured in the settings. This piece has been carefully inspected to guar