between stepped rectangular cut diamond shoulders, mounted in platinum, stamped PT950 and maker's mark possibly OM, accompanied by GIA report no. 6224827429 giving the F VS2 gradeOval diamond 12.46 x 8.03 x 4.30mmWeight: 5.5g
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