Ring Art Deco Saphir Synthétique Octogonale and diamonds

Ring octagonal engagement set in white gold 18Kt and paltinium (hallmark: owl), the center of which is set with a rectangular cut synthetic sapphire, in a setting of diamonds natural rose-cut, and calibrated synthetic sapphires. Total weight of diamonds estimated at approx. 0.15 Ct. Art Deco work, Circa 1930. Gross weight: 3.01gDesign height: 1.40 cmDesign width: 1.20 cm Size: 57 (diameter 18.10 / US 8.00). Condition: very slight micro-scratches on the gold and paltinium parts, slight abrasion to the stones, and slight wear to the setting, see photos. Did you know that man can make sapphires sapphires in the laboratory since the early 20th century? French chemist Auguste Verneuil developed the first process in 1902. These are chemically and physically identical to natural sapphires. All our engagement rings.