These small battery powered lights are cast in glow in the dark, translucent urethane. They have been cast from real quartz minerals with a sculpted base.
These can be hung with a nail. Be sure to hammer the nail into the wall at an upward 45 degree angle so the crystal does not slip off. The crystal can be placed over the nail using the drilled hole at the top.
Each crystal comes with a small LED tealight that can be set to flicker like a candle, flash or have a steady glow. It is turned on with a button at the top of the tealight itself and is then snugly placed into the crystal. You can also use a remote control for these lights if you want more convenience ( buy it here) . These light up with a bright teal color. The batteries will be shipped outside of the light ( tucked inside the crystal) to preserve the battery life.
When these lights are charged with UV /sunlight they will glow a BRIGHT green. You could hang these lights from your ceiling with some hanging hardware, or have them on a book shelf or desktop.
The Quartz clusters are just over 4" tall.