Vintage Colombian emerald and diamond fancy cluster ring in platinum

Vintage Colombian emerald and diamond fancy cluster ring in platinum. Centrally set with an estimated 1.30ct octagonal emerald cut Colombian emerald in a raised four claw setting, set to top and bottom with ten pear shape brilliant cut diamonds in claw settings and flanked to either side with four graduating rectangular baguette cut diamonds in step down claw settings, to an impressive vertical cluster featuring curving claws and open wire gallery, the tri-split trumpeting shoulders terminate to a tiered shank. Estimated total diamond weight 3.50cts. Tested platinum.