Hi Katie, there are a couple of secrets, bu not really secrets I just like saying the word. One is to go to your Listings Manager, find the Settings icon on a listing you wish to share, and then choose Share on Facebook. Now I recommend because jewelry is such a niche market, that you join Etsy groups specific to jewelry, fashion, design, accessories, etc. and share those listings! It's free marketing.
The other thing is to create a coupon code for your shop (a permanent one with no expiry date) and then promote that across your facebook page, Twitter feed, Instagram, business cards, and include the coupon for next purchase with everything you do sell.
Hope it helps, all the best Katie!