Purple Color-Change Color Change Sapphire, 0.68 ct Faceted from Tanzania

This stone has an alexandrite type color change. I've seen it show a steely greenish blue color in subtle daylight, and a fairly nice medium purple under indoor light. As is usually the case with these, it also can show some odd grayish and mauve colors, so I have it priced accordingly. Color: Blue-Green to Medium Purple, Cut: Round Brilliant, Weight: 0.68, Dimensions: 5.3 mm. (Information supplied by photo contributor.) © Daniel Stair, CustomGemstones.com

Credit: Daniel Stair, CustomGemstones.com 2014