Edwardian 1.70 Carat Natural Ceylon Yellow Sapphire Ring, circa 1905A striking antique yellow sapphire solitaire ring. The yellow sapphire in the centre certified as natural, unheated and originating from Ceylon (Sri Lanka) is a bright greenish yellow. The sapphire is rubover set in 18k yellow gold and flanked by wide, reverse tapering shoulders set with six (three each side) eight cut diamonds. Accompanied by a report from Gemmological Certification Services (GCS) stating the sapphire shows no indication of heating,