A beautiful high dome four carat, natural, no-heat blue sapphire sugarloaf cabochon from the coveted mines of Kashmir, India accented with single cut diamonds set on the fret cut gallery and around the acanthus foliage shoulders, accompanied by a gemological report from AGL stating the origin as Kashmir, with No Indications of Treatment; made in Platinum; size 4 1/2 US; British hallmarks, circa 1925.