Small group of modernist opal jewellery

Small group of modernist opal jewellery comprising a single stone ring, the oval cabochon claw set in yellow metal mount, stamped '585', size R approx, a tri-form brooch set seven small opals to the rope effect frame, stamped '585', an unmarked yellow metal and opal brooch (a/f), and a pair of clip-on earrings, unmarked (4)Small group of modernist opal jewellery comprising a single stone ring, the oval cabochon claw set in yellow metal mount, stamped '585', size R approx, a tri-form brooch set seven small opals to the rope effect frame, stamped '585', an unmarked yellow metal and opal brooch (a/f), and a pair of clip-on earrings, unmarked (4)