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,
between square cut sapphires and centring the geometric diamond frame, from this issue the flaring openwork diamond set ties each with stepped lines of square cut sapphires flanking, the diamond ground pave set with old brilliant, single and double-eight cut diamonds and featuring a larger old cut diamond to the open middles, mounted in platinum and white gold, serial number 0667, French workshop mark for R_, French assaymarks, together with a fitted Mauboussin case, unsigned but accompanied by a photocopy of a Mauboussin Certificate of Authenticity signed by Marguerite de Cerval Length 5.9cm / 2�''
Width 3cm / 1 1/8''
Central sapphire approximately 7.50 x 5.05 x 3.35mm Weight: 21.5g
Mid-20th century turquoise bead and seed pearl three-row necklace by Cartier, c.1960, possibly New York, converting to a shorter necklace and bracelet,
Antique emerald and diamond three stone ring, c.1900, centred by a principal 2.33ct octagonal step cut Colombian emerald, flanked by cushion cut diamonds, rose cut diamond points between, to an openwork looped scroll gallery and reeded shoulders, mounted in 18ct gold, accompanied by GPL report no. 21811 giving the Colombian origin opinion for the emerald and that the stone shows minor clarity enhancement, the cushion cut diamonds approximately 0.80cts in all
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,