Koch, a carved amethyst, enamel and diamond brooch, mid 20th century, designed as a posy of violets

£300 - £400 £529

Koch, a carved amethyst, enamel and diamond brooch, mid 20th century, designed as a posy of violets in carved amethyst, each set with a circular-cut diamonds, between leaves of green plique à jour enamel, mounted in gold, length 3.7cm, maker's marks for Koch, stamped 750, pre-1965 Austrian import assay mark for 18ct gold