... 20 thousand tons every year Our company has become the biggest manufactory of glass marbles with more than 300 ... 9-12 mm Color: clear,red,pink,yellow,golden,amber,cobalt blue,sea blue,sky blue,green,jadegreen,purple,mauve,violet,lilac,coffee,porcelain ... blue,porcelain green,black,Porcelain White,Peal white. Usage: ...