AN EMERALD, PEARL AND DIAMOND RING, BY JAR: Set with an oval-shaped Colombian emerald, to the pearl and diamond gallery and hoop, mounted in platinum, 1988. Accompanied by report no. 61997 dated 6 February 2012 from the SSEF Swiss Gemmological Institute stating that the emerald is of Colombian origin, with moderate amount of oil Literature JAR, Exhibition at Somerset House, London, November 2002 to January 2003, no.320