557
A Ruby and Diamond Ring
One cushion-shaped ruby, 5.11 caratsSixteen pear-shaped diamonds in the surround and brilliant-cut diamonds on shank, together approximately 5.35 carats18 karat white and yellow gold(5.11-carat Ruby)
<em>Gübelin report, numbered 18067507, dated 25 June 2018, Burma (Mogok), no indications of heating.</em>