... density1.85g/cm3 For decolorization stone: 1Typecobble & pebble (river stone)2Material100% natural stone3Usagelandscaping, paving, building ... , home decoration4Product class rangeunpolished pebble(super class, first class, second class)5Size ... ~5cm, 5~8cm, 8~12cm6Color Availableblack, yellow, red, green, gray, white, mixed7Processwash, wax8Featuregood quality, ...