"1920s Ring, 1.70 Ct Siam Unheated Sapphire"
Ring adorned with a brilliant-cut sapphire in a double entourage of old-cut brilliants and calibrated sapphires. Platinum mount and sapphires set in yellow gold. French work from the 1920s. Weight of the sapphire: approximately 1.70 ct, accompanied by an LFG certificate (April 2022) stating: Origin Siam (Thailand - Cambodia) without thermal modification.