As Q says, there's mahogany, MAHOGANY, and ***MAHOGANY***, and some is not useful as much more than pallets. Same for Rosewood. I have seen also, GOOD hardwoods used as pallets...my ex-bosses in a cabinet shop once got a pallet of Wengé (Millettia laurentii), an African hardwood much coveted for some things.

One of the most coveted woods anywhere, but almost totally unavailable, is Cuban Mahogany. The island was practically stripped bare of it before laws were in place to save the remaining stocks.

Rosewood is an immense marketing problem, as it is common for wholesalers to name any vaguely interesting brownish-red wood as "Antarctic Rosewood" or such...one of the perennial problems is "Bolivian" Rosewood ('Morado'...or Caviuna)..there is 'almost' no real Rosewood in Boliva...certainly not any of it is available.

I have worked with African Mahogany (Khaya spp.)quite a bit...(in woodturning)...it is often striped when cut at certain angles, and very nice.

The ONLY way to be sure of a wood's origin and true identity is to be able to pin the Latin name (genus/species) on it.