Antique Brazilian Rosewood Authenticity Testing

I have 3 boards that I believe are made of Brazilian rosewood, purchased some 40 years ago. Now we have learned that the laws concerning this species have changed in the US. So, I want to sell them to a local luthier so they can be made into high-end musical instruments. To maximize my return, I need a US lab to prove the authenticity of Brazilian rosewood (Dalbergia nigra). Is this something you know and can do?