✦ Before wearing, keep the rings in the UV light source for a few hours, it will charge the rings and make them glow in the dark. Most of the light bulbs and natural sunlight work as a source of UV light. In other words, when you wear the rings in the daytime, it will automatically charge the rings to make them glow in the dark. ✦ Note: The color reflection in the moonstone is the reflection of the background. This situation is common in opal and moonstones.