Ruby and diamond ring

From a private collection

Ruby and diamond ring 

Set with a marquise-shaped diamond weighing 3.18 carats, between calibré-cut ruby shoulders, size 53.

Accompanied by a GIA report no. 6227422138, stating that the diamond is E Colour, VVS1 Clarity, together with a working diagram stating that the diamond might be internally flawless after minor repolishing; together with GIA report no. 673729, dated 10 October 1973, stating the diamond is D Colour, Flawless Clarity.