[10pcs]
These beads are UV reactive and glow in the dark. Please charge in sunlight or a window for a few minutes every once and awhile to recharge the glow because these are kept in the dark during shipping. Please Note: We test and use our own product because customer satisfaction is important to us. Just like any glass item, handle with care. These are 100% 10 packs 2 balls of each color, 20 packs 4 balls of each color.Quartz and they will not break if handled with care and proper use; We use and test these regularly for long term use and have not broken a single pearl. Please never go from hot to cold as this will crack any glass object, heat stress alone will never cause these to break.