The one thing I hate about this store is how narrow all the aisles are - I have the constant feeling I'm on the subway as someone is always shoving past you.
That being said, if you're into making jewelry, this is a great place to come. They have esoteric and normal books on the craft - wood carving, metalsmithing, etc. They have colored wire, drills, every tool you could need - saws, wax, pliers, etc.
You do need TIME - in the back they have bins and bins, hundreds of them - of various jewelry findings, obscure metal charms and supplies. YOu could spend hours here.
They also opened a small room with beads - semi-precious stones, crystals, and threads for your more basic jewelry-making.
The staff is also super knowledgeable if you need any guidance, and the owner once called me because he found a plastic bag I left there, in which was a jacket and a manuscript I had written - definitely gives me a good feeling about the staff.