A gold, amethyst, ruby and diamond, brooch, centring on a rectangular mixed-cut buff top amethyst within a garland frame of rose-cut diamonds, accented with circular-cut rubies, mounted in silver and gold, French assay marks and numbered 5690, c...

A gold, amethyst, ruby and diamond, brooch, centring on a rectangular mixed-cut buff top amethyst within a garland frame of rose-cut diamonds, accented with circular-cut rubies, mounted in silver and gold, French assay marks and numbered 5690, c. 1900, 5cm x 3.5cm
Good condition, minor abrasions commensurate with age and wear. amethyst 23.4 x 16.9 x 10 = 27.40 carats, light purple with good clarity, diamonds and rubies bright and lively, gross weight 16.4 gr