DIAMOND AND NATURAL AND SYNTHETIC RUBY GREYHOUND BROOCH, CIRCA 1930. Modelled in profile standing on a baguette diamond platform, pavé-set throughout with old European-cut and single-cut diamonds, the total diamond weight approximately 6.50 carats, the blanket edged in buff-top calibré-cut natural and synthetic rubies, accented with a calibré-cut sapphire, the eye and nose of onyx, mounted in platinum