Platinum, Ruby, and Diamond Ring

center oval cut ruby approx. 7.4 x 6.3 x 3.2mm, 12 marquise cut diamonds and 12 round brilliant diamonds estimated total weight 2.80cts., H-J, VS to SI, partial stamp "10%...Plat", shank and mounting tested platinum, size 6-1/4, 8.7 grams

Provenance: Estate of T. Kenneth and Karin Ellis, "Stepping Stones", Hot Springs, Virginia
Condition Report: partial stamp inside looks like '18K' under "IRID"- but tested platinum, very small chip to ruby on girdle visible with loupe, ruby likely heat treated, light wear and scratches