Color Change Sapphire, Vanadium-Doped Lab Gem Stone:Diamond Cushion, 11.4×9.7mm, 5ct showing a silky chatoyance caused

showing a silky chatoyance caused by twinning

These are Pyropearls™

so it's an amazing gem in its own right instead of just trying to imitate diamonds

However it turns out it is only almost impossible

Due to quick cooling rather than a single large crystal

Color Change Sapphire, Vanadium-Doped Lab Gem Stone:Diamond Cushion, 11.4×9.7mm, 5ct showing a silky chatoyance causedThese are faceted stones cut from Vanadium doped color change sapphire. It has a cool color change from blue under normal lighting to purple under warm lighting, with a nice greenish purple hue under fluorescent lamps. This material is sometimes incorrectly sold as 'alexandrite', and since mislabeled stones were sold on cruise ships in the 70's and 80's jewelers sometimes call it "grandma's alexandrite". Personally, I think this is cool enough that