It's a long time since I was in the instrument business, but the situation as I recall it was that at the end of the sixties the Brazilian government forbade the export of any pieces of rosewood big enough to make anything bigger than a doorknob. The idea was not to entirely prevent the export of the wood, but to encourage job creation while reducing job depletion. This created a situation where Giannini guitars (Brazil) were the only people with real access to fresh stocks of Brazilian rosewood. However, the only solid rosewood guitars they made were classics, although they made something called a Craviola, which played and sounded like a cutaway guitar; the lower bout was almost normal, but the upper bout was just curved like a lute or cittern. These weren't expensive, and were very good value. Their other steel-strung instruments were laminated, although I wouldn't be surprised to find that someone has one with solid back and sides - very common to do this for exhibition models, which never seem to find their way back home. I would suggest that what is available in the US as "Brazilian" is possibly coming from the Guyanas, Belize or Honduras, or something like that, as the last time I enquired (1991) I found the situation hadn't changed and only small pieces for woodturning were coming out of Brazil.