Boucheron Sapphire And Diamond Cocktail Ring In Yellow Gold And Platinum

Cocktail ring in 18KT yellow gold and platinum (hallmark: eagle's head), set with an intense blue sapphire, unheated, weighing approximately 0.60Ct, in a surround of brilliant-cut diamonds weighing a total of approximately 0.50Ct, and sapphires weighing a total of approximately 0.40Ct, in a surround of gold ropes.
Central sapphire accompanied by its Carat Gem Lab certificate, specifying natural sapphire from Siam without thermal modifications. Work circa 1955/1960 by Boucheron. Signature and numbering.
Gross weight: 7.67g
Height of the central motif: 1.50 cm
Finger size: 48 (diameter 15.25/ US 4.20)
Condition: slight micro scratches on the gold and platinum parts, scratches and some shocks on the stones, signature and numbering partially visible, slight wear of the setting, see photos.