Mauboussin emerald and diamond cluster ring, French, 1978.

Mauboussin emerald and diamond cluster ring. Set with one octagonal emerald-cut natural Zambian emerald in an open back claw setting with an approximate weight of 2.40 carats, surrounded fourteen rectangular and tapered baguette cut diamonds in open back claw settings with a combined weight of 1.50 carats, and further adorned by twelve rectangular baguette cut diamonds in open back channel and rubover settings with a combined weight of 0.75 carats. The total approximate diamond weight is 2.25 carats to an impressive cluster design, with fancy open backholing and flanked by split shoulders leading down to a solid shank with champfered edge. Marked 18 carat yellow gold, signed 'Mauboussin Paris', indistinct maker's mark, numbered '28549', French, 1978, accompanied by Gemmological Certification Services report 5784-1075 and certificate of authenticity from Mauboussin.