Justine, that bracelet looks perfectly authentic. The clasp is correct as are the links and the hallmarks are all there!
I just posted right before you asking about an Elsa Peretti piece and it is missing the “Elsa Peretti” hallmark written out in script that yours has. Also yours says Spain which is common for her pieces but mine does not have that.
All in, although I’m not an expert (I just have a lot of high-end Tiffany) yours looks very good.
I’m hoping someone with knowledge can chime in on my 18k bean piece....