We sell mixtures of marbles but I always have some of these big ones left over (because in the mixture you get many more small than large).  

They are approx. 7/8" to 1"

PLEASE NOTE:  These are not all "perfection".  They've been stored in a bucket together.  They're nice and pretty and shiny but if you're one of those that wants perfection just pass because they have swirl marks, some flea bites here and there, indentions and just slight imperfections.