Color Change Sapphire – Natural, Faceted, Blue, .46 ct

This sapphire shows about an 85% or 90% color change from a steely or purplish greenis blue under daylight fluorescent bulbs to purple under incandescent light . Color: Slightly Purplish, Greenish Blue to Purple, Treatment: None, Cut: Round Brilliant, Weight: .46, Dimensions: 4.90. (Information supplied by photo contributor.) © Daniel Stair, CustomGemstones.com

Credit: Daniel Stair, CustomGemstones.com 2014