Hi Craig -- Thanks so much for your response! I will try the juice in the water for the time being as that sounds promising to me, along with increasing my total water intake. I have found that there are actually four types of stones, and that in the past I had one that was rare and of 'genetic' origin. I can't remeber its exact name, something like cytiene, but I remember the urologist specially tested it because it could have affected our kids. Whether this stone is the same, I don't know. I don't know how they will determine what type it is, given that they are going to 'blast' it into millions of pieces but I will ask the urologist on Tuesday. Thanks again for your help!! Cath