I have been seeing these made with fake pearls, but the only downside to this, is many of the sellers use round beads, but then put a flat stud finding on the back. To me, that will not hold up too well, so I have made the pearls myself out of polymer clay and this way the top bead can be flat on the back to ensure the stud will have a good surface to adhere to.
You can find all my items on eBay, Etsy, Artfire and Bonanza :
http://www.pinkclaymonkey.com (linked to my eBay account)
http://www.etsy.com/shop/JegasCreations (this has my old business name)