of shaped rectangular form, centred by a principal old round brilliant cut diamond in diamond foliate cluster, to a four-row emerald line ground, channel set with square cut stones, outer line border of single cut diamonds, millegrain set in platinum, signed 'JEC & Co', serial number possibly Z8072, the principal diamond approximately 1.25ct Length 5.3cm / 2 1/8''
Width 1.7cm / 5/8''
Central diamond approximately 6.9 x 6.7 x 4.25mm Weight: 13g
Later 19th century cushion cut diamond cluster flower pendant-brooch, c.1890, in the manner of the mid-18th century style, centre stone approximately 3.00ct,
Art Deco sapphire and diamond bow brooch by Mauboussin, Paris, the openwork centre of buckle design featuring an oblong cushion cut sapphire of approximately 1.25ct,