Well, somewhere along the line something was anaylsed (no stone removed but a sample was given pre-op) and it turned out to be calcium oxalate. Doc wants me on a low oxalate diet. Surfing today looking for ideas and it looks like between the diabetes and the stones (' a rock and a heart place ' ? ... there's a pun in there somewhere ;-) all I can eat is water with a heaping side order of air