The granite x yellow belly = ebony is not a guarantee. Actually i believe it is a fairly rare occurence. If I am not mistaken it has to be a special granite with one of those mysterious hidden genes. Someone else might be able to elaborate more on this. There are alot of granites and yellowbellys out there but very few are able to make an ebony. Any way here is a pic of my granite girl Greta. She should be ready to breed this coming season.