This is the Patera Large Heart Pendant, there are images in the Easy Peasy books to fit this shape. Sorry I couldn't get a very good photo, I don't have my macro lens with me today.
You might be able to see the small gem embedded into the Fluxe. I used an acrylic gem so as soon as I pulled the piece out of the oven I put the gem in place. The Fluxe stays gloopy for a very short time before it cools.
You cannot put these acrylic gems in the oven as they will melt - no I didn't do it but I have melted one with a heat gun before.