Being one of the uneducated types that knew nothing of this brand until I googled it just then after seeing it mentioned in this sub-forum, the Alhambra line looks like costume jewellery to me. The only thing that sets it apart is that it's made from precious jewels/metals (and the only way I can tell is from the site and what they're saying, lol) but yeah, if I saw it on someone, I'd assume it was costume jewellery.
The other lines, though? Not so much.
The other lines, though? Not so much.