with principal oval cabochon turquoise to a four-row cluster border of small round turquoise, round brilliant cut diamonds and circular facetted sapphires, claw set and mounted in yellow metal testing as 18ct gold and white metal testing as platinum, signed 'VAN CLEEF & ARPELS', with serial number 79709, French assaymarks representative of 18ct gold and platinum, together with a Van Cleef & Arpels grey suede case, approximately 1.68cts of diamonds, accompanied by IAJA expertise report no. XP2770-070126 signed by Olivier Bachet & Catherine Cariou, declaring that in their opinion these are a genuine Van Cleef & Arpels item from Van Cleef & Arpels Paris Length 2.7cm / 1 1/16''
Width 2.5cm / 1'' Weight: 26.5g
Late 19th century / early 20th century 'Noeud Louis XVI' diamond openwork ribbon bow brooch by Cartier, Paris c.1902, the loops and ribbon ends centred by alternating single stone and quatrefoil clusters,