we can supply all kinds of cobble,the dimension include 2mm to 3 cm,as for the curb,the dimension is 9x9x9mm,10x10x10mm,9x9x5mm,10x10x5mm.usually we recommend the client use the fujian granite to do the curb ,because the fujian granites are cheap and they are suitable to do curb.my e-mail is .cn