I agree about the local's limited knowledge or honesty about species, there are at least 5 different woods here in Central America commonly marketed as rosewood.
Ditto with Granadillo, or Grenadillo which botanists say is 2 different woods, and locals will show you 10.
Just mention a species here and they'll lead you to piles of wood, all different, but all ostensibly the one you requested.
The more searches you do on what name in what region is applied to what species, the more confused you get.
When a guy in the US tells me he has one piece of "Granadillo" and it doesn't look like the "Brazilian Cherry", I really have to wonder if either of the species is identified right, even botanists disagree on several.