Geometric ring designed by the Aletto Brothers. A contemporary geometric cocktail ring, created by the Italo-American jewelry designers Aletto Brothers. This cocktail ring has been masterfully crafted in an industrial shape in solid yellow gold of 18 karats with high polished finish. Chrysoprase: Mounted on top, with 1 fancy curved cabochon cut carved from natural chrysoprase attached to the ring with four round screws. Diamond: Mounted in bezel settings, with 4 round brilliant cut diamond, 0.20 carats, white colorless F color, VS-1 clarity. Birthstone: Chrysoprase for the month of May. Weight: 15.95 Grams, (10.20 Dwt). Size: 6.75 sizeable. Measurements: 27 mm by 13 mm (1.0 x 0.91 Inches) and raise 14 mm over the finger. Hallmarks: Stamped with the maker's mark, the mark for the assay of the gold and signed, "ALETTO BROTHERS .750". Aletto Brothers is a world-renowned master of the sophisticated and meticulous technique of invisible setting, the Aletto family of jewelers is constantly pushing the boundaries to create impeccably-crafted and extremely personal works of wearable art. They passed their knowledge and refined their skills over five generations, the Aletto Brothers name stands for excellent craftsmanship and quality. Still family owned and operated, the firm is currently based in Boca Raton, Florida, but was originally started in Naples, Italy, by Bartolomeo Aletto an Italian goldsmith. His first major commission was to create a special pi