Chaumet. A fine emerald and diamond three stone ring

Chaumet. A fine emerald and diamond three stone ring, the square shaped emerald is set with two rectangular radiant cut shoulder diamonds in platinum. Signed CHAUMET Paris with French control marks to the exterior of the ring. Size K. With a letter from Chaumet, 12 Place Vendome, Paris dated January 1983 discussing the emerald before it was set in the ring and including drawings of the ring. And with gemmological certificate from Carat Gem Lab numbered ct01787 and dated May 27th 2011 stating that the emerald weighs 2.18cts, has indications of insignificant clarity enhancement and is of Colombian origin.