Ring Halo in yellow gold, ruby and diamonds

Ring halo in yellow gold 18 carats. It is set in its center with a natural Burmese ruby weighing approximately 2.14 carats, surrounded by 12 diamonds rounds totaling approx. 0.5 carat, and 4 natural Burmese rubies totaling approx. 0.80 carat. 

NB: A gemology report from the Bellerophon Institute has been carried out, indicating heated ruby with minor residue.