... , road pave,aquarium and building surface, 8.Acid and alkali resistant, resistant to sunlight, aging resistance,long service life.Luminous cobblestone is ... so on. Spreading around the swimming poor, puting in the aquarium or inlay into the scenery wall all are the good ... .5-4.5cmAverage Weight8g, 20g, 28gShapePebble, Cobble, triangleWater ResistantYesUV ResistantYes Luminous Stone for Ornament