Gorgeously colored, this Ceylon color change sapphire is a medium-dark, vivid, blue color with a violetish undertone in daylight, changing 100% to dark, pure deep purple in incandescent light, and hails from the gem fields of Marapana, Sri Lanka—a significant, 100% color change from blue to purple that has been gently heated. Cut for a prominent appearance; this is how a color change, Ceylon sapphire, should be.