AN ART DECO RUBY AND DIAMOND COCKTAIL RING, the oval cabochon ruby mounted at an oblique angle in a pavé-set diamond conical mount with calibré-cut ruby detail and baguette-cut diamond shoulders to the facing side, circa 1930 (one diamond deficient)

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AN ART DECO RUBY AND DIAMOND COCKTAIL RING, the oval cabochon ruby mounted at an oblique angle in a pavé-set diamond conical mount with calibré-cut ruby detail and baguette-cut diamond shoulders to the facing side, circa 1930 (one diamond deficient)