Going from memory here, but I believe that some years ago S&W did offer rosewood grips for the model 41 as a cataloged accessory. This would probably have been in the 1980s.
I've only seen Walnut and Goncalo Alves used for solid wood, S&W made Model 41 grips. I've seen laminated wood grips marketed as "Rosewood" but who knows what they're made off.....probably birch.
Here are some Walnut and Goncalo Alves factory grips:
Walnut:
N Frame S&W Rosewood for comparison (note the open pores):