just getting started

There are a number of options.

Yes, you should have a tax ID. Aside from the tax/legal issues, having a tax ID will make you look much more professional, which would encourage the stores to do business with you.

To help with the professionalism, I'd start by producing a simple flyer.
It doesn't need to be a color "catalog" of all your re-orderable items. Mostly, it needs to be a price list with descriptions of your best selling items, and perhaps your general materials and/or a brief bio.
A color photo of your jewelry would also be nice -- the photo could be of one piece, a display rack, or display board... something that shows the character or style of your jewelry. The photo can just be a 4x6 stapled to the b&w photocopied flyer.

For each item that you choose to include on the flyer, list the wholesale price and suggested retail price, along with a description that identifies the item.

You will probably need to provide a display rack that would fit on their counter.

The best method of payment, is if they simply buy a rack-full of items from you, sell them, and then re-order as they start to run low.

Consignment is less risk for the store-owner ... they pay no money up front. You supply them with a rack-full of goods, and as they sell things, they cut you a check. This can get messy ... you'll want to keep a very good list of what you give them whenever you bring in new stock. They may pay you each time they sell something, or do an inventory once per month and pay you for what is no longer on the rack.
If they pay from a list of what they sold, rather than what is no longer on the rack, you may to come up with some kind of "loss" plan. Who covers items that walked out the door without being sold? Or that don't have a record of being sold, because someone pushed the wrong button on the register, or forgot to mark your item on a list?

It's nice to have a little bio on the artists, both as a small business card to half-page easel-type display card, and for the store's buyer to read.

When you produce the flyer, try to think about what you, both as the store buyer and as the end customer, would want to know about the goods, their pricing, materials, creators, etcetera.

I'll think more about this, and add some more later. Anyone have any comments?
I'm sorry I over-looked this posting before ... I don't know how I missed it for 2 months!