The crystals glass beads will hold a charge for some hours after being left in the light for a few minutes. It prefers real sunlight or UV light but normal room lighting will cause it to glow as well.
I use the absolute best glow in the dark pigments on the market. Not cheap China glow powder. Powder made in Russia! if it isn't completely amazing... then i don't sell it!
Green glass cube crystals is 6x6 mm. Bracelet is about 18 cm long (7 inches). If you need other lenght please ask!
Each bracelets is handmade and may vary slightly in design.