Glass marbles 16 mm are machine made and mass produced. Used for landscaping gardens and outdoor areas. Color Cobalt Blue Shimmering Surface.
 
 
 
 | Quality: | Average quality for regular use. For higher quality, check out our crystal glass balls. | 
 
 | Surface: | Small grooves on the surface since they are factory made | 
 
 | Weight: | One 1 kg = 180 marbles |