Irregular Quartz Luminescent Stones

Irregular quartz luminescent stones.
They glow in the dark after being charged with any type of light (the fastest are sunlight and black light). Just two minutes are enough to see them in the dark for hours.
Color: yellow pale with light - blue or green in the dark.
Packages: 250 gr, 500 gr, 1 kg.
Different diameter sizes: S (1-3 mm), M (5-10 mm), L (10-20 mm), XL (20-60 mm).