Spinel

This is a bright, brilliant stone that shifts in color from a sky blue to a bright purple blue much like a lighter tanzanite. Spinels of this color are also known as "periwinkle". I'm not sure what caused the pink flashes in the photo. The other blue and purple blue colors are fairly accurate though. Color: Medium Purple Blue, Cut: Step Cut Cornered Square, Weight: 0.97, Dimensions: 5 mm. (Information supplied by photo contributor.) © Daniel Stair, CustomGemstones.com

Credit: Daniel Stair, CustomGemstones.com 2014