Adeline Cacheux curb chain knot cocktail ring sterling silver

French jewelry designer Adeline Cacheux, who has designed for the very high end Christofle collection, perfectly captures that elegant but edgy French style with this twisted chunky curb chain link knot cocktail ring. I believe this is 925 sterling silver but I cannot find a stamp. Approx a size 5 ring, around15.5mm inside diameter; weight 0.7 oz. Includes original box. Originally $195