Platinum, Color-change Sapphire, and Diamond Ring

Description:

Platinum, Color-change Sapphire, and Diamond Ring, set with an oval-shaped color-change sapphire measuring approx. 12.99 x 12.32 x 7.27 mm, weighing 9.32 cts., further set with full-cut diamond melee, size 7 1/4.

Accompanied by GRS report no. GRS2008-09115, dated September 12, 2008, stating that the sapphire is natural, color-changing from bluish-green (daylight) to purple-red (incandescent light),with no indications of thermal treatment.
Estimate $15,000-20,000