GIA Certified Color Change Sapphire 1.69ct 18K Rng

Color Change Sapphire 1.69ct, GIA Report No = 6207272013, Displays Color Change from Bluish Violet changing to Purple--See image on GIA Certificate, Dimensions of Sapphire = 8.48 * 6.36 * 4.10 mm, September Birthstone, 5th and 45th Wedding Anniversary Ring, Natural and Untreated, Oval Shape, Excellent Cut, Clarity = VS, Blue CC Sapphire is sourced from Umba Valley, Tanzania, Doubly Refractive, Refractive Index = 1.76 - 1.77, Diamonds = 15pcs, TCW = .60ct, Ring Weight = 5.89g, Ring Size = 8,