He does indeed look like he might possibly be het granite, but no way to be sure. Het granites tend to have the jigsaw puzzle thing going on in their patterns. Even if he is het granite though, it does you absolutely no good until it proves out, and you can't do that without a granite to breed it too. If you were to breed it to a het granite that hasn't been proven, and get no granite babies, you wouldn't know which one wasn't het for sure. In order to produce a homozygous (visual granite) both parents have to carry the gene. If you were to breed 100% het granite to a non granite burm, then half of the babies would be het, half wouldn't. The problem is you can't tell which are and which aren't, so they're all called 50% possible hets. That doesn't mean each one is half het, just means that each one has a 50/50 chance of being het. Him not being proven though you cannot sell thems as even possibles. Breeding a normal to a homozygous visual albino (or any other recessive trait in homozygous visual form) and you will get all normal looking babies that are 100% het for albino. If he does prove to be het albino and you breed him to an albino, then half the babies would be albino, the rest would be 100% hets.
SO, pirarucu was correct, if he were proven to be het granite but not het albino, and you bred him to an albino, you would get 100% het albino babies, and 50% possible het granite. Without him being proved out as anything though, you could only sell them as het albinos.
