Not touching the ID on this until I get a better idea where it came from.  Rosewood is a messy term, and while I agree that it looks "rosewoody," but there are a lot of dark tropical timbers, and I'll need to dig to get a better answer.  The smaller a geographical area I have to dig in, the better. 
 
Are we saying Vanuatu for certain, or was that a guess?
F