Hi Merry, well it sounds like you have a good booth set-up and great product, but you feel like you are running a museum display with free admission! (Been there, done that, learned to sell!!)
My questions to you are: Do you engage the customer in a conversation? When you say "Hello" and they reply, "I'm just looking," do you reply with something like, "May I tell you what you are looking at?", and then launch into a conversation about a particular item, drawing them into a conversation? Do you have a special business card to give them offering a discount if they return to your booth before the end of the day? Do you have a photo album showing how you create your designs? How about a list of all of the possible birthstones that they may not be aware of? All of these tips and so much more are included in The Definitive Guide to Selling Your Handcrafted Jewelry. You might think about this as a very wise investment to be able to sell your work (that contains so much cost in supplies and time). I wish you good fall and holiday showings Merry!!
Answer contributed by Dale "Cougar" Armstrong