112. SAPPHIRE AND DIAMOND RING Set with an oval sapphire weighing 16.81 carats and two tapers diamonds, French hallmark for platinum (850°/00), size 52, gross weight 9.86 g. Accompanied by an ALGT Antwerp certificate attesting to the sapphire's Sri Lankan (Ceylon) origin and the absence of heat treatment. Certificate no.23458603 dated 17 March 2023. SAPPHIRE AND DIAMOND RING Claw-set with an oval-cut sapphire weighing 16.81 carats between shoulders set with two tapered baguette-cut diamonds, French import mark for platinum (850°/00), ring size L½, gross weight 9.86 grams. Accompanied by a report from ALGT Antwerp stating that the sapphire is from Sri Lankan origin (Ceylon), with no indications of heat treatment. Report no.23458603, dated 17th of March 2023.