Photoluminescent Stone
Jinan Realglow Photoluminescent stone are including photoluminescent gravel and photoluminescent quartz. The photoluminescent gravel had long glowing time, after absorbing visible light for 10-30 minutes, the glow in the dark gravel will glow more than 12 hours in the darkness. The photoluminecent quartz is one lower price photoluminescent stone, has good initial brightness in first 30 minutes in the dark.