I had to read what you'd written twice, hahaha. Black, oval. Did it also have an imprint like the rectangular one? I've never used polymer clays, or PMC or enamels, or resins or anything like that. At the moment, I think it would just be another thing to buy and try. I'd really like to stick at the one style and get it as good as I can, before I pick up a new thing......having said that, I look at the very pretty things that people like you do and I want to give it a go. Unfortunately, I don't know anywhere I could get some hands-on practice and there really aren't many places I can go to pick up supplies off the shelf (kilns included). When I was in the US in 2007, it seemed you could walk into any town, anywhere and get jewellery making supplies. Apart from beads, it isn't like that here in Australia.
Thanks for posting the pic....they really are worth a thousand words, aren't they!