CARTIER. Very nice not heated yellow sapphire mounted on a blue sapphire and yellow-gold ring. Signed Cartier, with Cartier certificate. Circa 1960 Centering on a cushion-shaped natural yellow sapphire not heated weighing approximately 15 ct, to a stylized mount set with graduated round blue sapphire. Signed Cartier Paris. Accompanied by a Cartier certificate N°GE 2012/186 (stating that the yellow sapphire later replacement not recorded by Cartier). Accompanied by a copy certificate of Gem and Pearl laboratory N° 11839. TDD 50