Sapphire cabochon with violet-purple flowing into a deep indigo blue zone, with the darker area grounding the color and giving the stone a strong, moody contrast.
An Phu, Luc Yen, Vietnam, a classic locality known for naturally zoned sapphires where distinct color bands reflect changing chemistry during crystal growth
3.77 carats / 9.7 x 7.3 x 5.4 mm
Estimate: $125 - $135