I would avoid this seller at ALL costs as it seems as I go through her listings most are fake.
The Nordstrom link no longer seems to be working but it is searchable through Google where you can find their original page and zoom in. Here is a capture of the pic from Nordstroms with full credit to them.
This seller is selling a turtle charm, but he has photos of two different charms, lol.
The photos are not the best, but one can see the differences, the main one being the fake charm has the clasp at the front by the head. The authentic turtle charm should have the clasp at the back by the tail. Different boxes too, so I'm guessing he lifted the photo of the real charm from someone else.