the cushion cut sapphire claw set portrait, within an undulating border of round brilliant cut diamonds graduating larger at each end, mounted in platinum, signed 'MELLERIO', serial number 2744B, Mellerio workshop mark and French platinum control mark Length of cluster 16mm
Width of cluster 13mm Weight: 6.5g
Early 20th century diamond and sapphire 'eye' cluster ring, French c.1910, with an old European cut diamond brilliant to centre, approximately 0.90ct, flanked by tapering calibre cut sapphires in a millegrain scalloped edged border of small old single cut diamonds, mounted in platinum, trace of French assaymark and workshop mark
Art Deco diamond and sapphire oblong cluster ring, c.1920, set with an old lozenge cut diamond to a calibre cut sapphire ground and outer diamond border of old brilliant cut stones, diamond line shoulders extending up to the principal diamond, millegrain set, engraved anthemoin and laurel to half shank, lozenge pierced to gallery, serial number within the shank 3632