manufacture feature :without polution material :porcelain size :20-50mm we are the largest manufacture of glass marbles and stones in China and we export them mainly to America, Southeast Asia, Europe, etcRound marble sizes12-14,13-25,14-16,15-17,16-18,17-19,8-35mmcorlorclear, red, pink, yellow, golden, amber, cobalt blue, sea blue, sky blue, green jade- green, purple, mauve, violet, lilac, ...