Art Déco brooch set with 7 old-cut diamonds and 46 rose-cut diamonds totalling ca. 1.5 ct, good colour and clarity, further 61 carré-cut sapphires, platinum, 5.5 g, w.: ca. 4 cm, 1920 - 1925, diamonds and sapphires partly chipped, facet edges partly abraded, fine millegriffes decoration, age-related good condition, austrian hallmark and "ST".