Antique ruby cabochon and diamond cross, French, by Auguste Belleau, circa 1880.

Emerald and diamond cocktail ring by J. E. Caldwell, American, circa 1940.

Diamond and ruby ring by Yard Inc., American, circa 1935.

Antique diamond set 'dove of peace' brooch.

Antique gold long guard chain with snake slide, French, circa 1895.

Art Deco diamond ring, French, circa 1935.

Diamond, emerald and plique-a-jour enamel ring, Polish (Warsaw), circa 1930.

Gold, silver and enamel chatelaine pendant set with pearls and lapis by Froment-Meurice, French, circa 1850.

Ornate diamond cluster ring, circa 1920.

Natural Burmese sapphire and diamond cluster ring, circa 1920.

Star sapphire and diamond ring, circa 1920.

Antique star ruby and diamond earrings, circa 1870.