Jewellery, Watches and Objects of Vertu

A long opal bead necklace, the single row of graduated spherical opal beads with facetted clear glass and crystal bead spacers between, to an openwork clasp centred with a collet set round-cut ruby, mounted in white precious metal, stamped ‘750’, necklace length 92cm, opal bead diameters 2.8mm - 8.2mm. £600-800