Gübelin, a sapphire and diamond three stone ring, set with a central oval sapphire flanked with

Gübelin, a sapphire and diamond three stone ring, set with a central oval sapphire flanked with diamonds in platinum, maker's mark to inside shank, size L

Accompanied by GCS report number 5784-0619 dated 24th November 2023, stating that the sapphire weighing approximately 3.00 carats, is of Sri Lankan (Ceylon) origin, with no indications of heat treatment