Glow glass chips,glowing in the dark glass stone for garden or landscaping decoration. glowing time: above ... 10hours size:1mm up We,YANTAI KINGSTONE,CHINA SUPPLY THE ... WAY, GARDEN,WALL,STEP,COUNTERTOPS,TERRAZZO FLOORING GLOWING DESGIN.SAMPLES IN FREEQINGDAO PORT,CHINA glow in the dark glass