Non Heated Large Ruby Ring

Certified non heated ruby.  The American Gemological Laboratories analysis with "The Prestige Report" the ruby in this ring is "none heat enhancement". "Non-heated rubies are scarce."  The report will be given to the buyer of this investment quality stone. Measurement of ruby: 16.27 x 12.34 x 8.57mm,  approximately 18.58 carats, cabochon cut.  The actual stone is more pink than photo shows. Origin Provenance:  Vietnam Mounting: platinum accented with sixteen brilliant cut diamond. Size 7.75 - can be sized.