Ring Pompadour Art Deco Sapphire Siam Unheated and diamonds

Ring Pompadour in rose gold 18Kt and paltinium (hallmark: owl and mascaron), the center of which is adorned with an unheated cushion sapphire, weighing 3.65 Cts, in a setting of diamonds antique-cut sapphires. Total weight of diamonds estimated at approx. 1.50 Cts, color estimated I, purity estimated VS to SI. Central sapphire accompanied by its Carat Gem Lab certificate, specifying natural Siam sapphire without thermal modifications. Art Deco work, circa 1930. Gross weight: 7.42 gDesign height: 1.80 cmDesign width: 1.50 cmSize: 54 (diameter 17.15 / US 6.75). Condition: slight micro-scratches on gold parts and stones, natural inclusions in stones, slight irregularity of setting, see photos. The name of the sapphire has two possible origins. Firstly, it comes from the Greek sappheiros meaning blue. But it could also derive from the Hebrew sappir or "the most beautiful thing", although until the Middle Ages the term was used to refer to lapis lazuli. All our engagement rings.