THE ROCKEFELLER EMERALD
A RARE AND HISTORIC EMERALD AND DIAMOND RING, BY RAYMOND YARD
Set with an octagonal step-cut emerald, weighing approximately 18.04 carats, flanked on either side by trapezoid and circular-cut diamuonds, 1948, ring size 7 3/4 ins., mounted in platinum, in a Raymond C. Yard red case
Signed Yard for Raymond Yard, no. A14976

Accompanied by report no. 17050041 dated 8 May 2017 from the Gübelin GemLab stating that the origin of this emerald would be classified as Colombia, with no indications of clarity enhancement; also accompanied by an Information Sheet further detailing untreated emeralds.