90. SAPPHIRE AND DIAMOND RING Set with an oval cushion-shaped sapphire in the centre, shouldered with 8/8-cut diamonds, French hallmark for platinum (850°/00), master's hallmark illegible, ring size 52, gross weight 5.14 g. Accompanied by an analysis report from the GCi Lab (Gemological Consultancy) attesting to the Sri Lankan origin and the absence of heat treatment for this sapphire. Report no.2403CDS9063 dated 20 March 2024. SAPPHIRE AND DIAMOND RING Claw-set to the centre with a cushion-shaped sapphire, between shoulders and set with single-cut diamonds, French assay mark for platinum, illegible maker's mark, ring size L½, gross weight 5.14 grams. Accompanied by a report from GCi Lab (Gemological Consultancy) stating that the sapphire is of Sri Lankan origin, with no indications of treatment. Report no.2403CDS9063 dated 20th March 2024.