Birks, a sapphire and diamond ring, claw-set with an oval sapphire weighing 10.39 carats, to

Birks, a sapphire and diamond ring, claw-set with an oval sapphire weighing 10.39 carats, to shoulders set with baguette diamonds, mounted in platinum, size L1/2, signed Birks, stamped Platinum

Accompanied by Gem & Pearl Laboratory report no. 24760, stating that the sapphire is of Sri Lankan (Ceylon) origin, with no evidence of heat treatment.