You read the name right, these crystals not only look spectacular but they glow under black light and in the dark! These crystals have special glow powder added to them to make them extra special, all you need is a little bit of UV light (or sunlight, just not a lot) and you've got yourself a spectacular glowing crystal. The aqua is clear in the daylight and vibrant aqua under black light and while glowing. The orange is a pale orange during the day, a vibrant pinkish orange under black light, and glows a beautiful blue color.