I gotta say the photos and the tutorial aren't mine, there's the link. That blog is amazing, you should check it out.
1
Outline a heart shape in heavy-gauge wire. Using a pair of pliers, tie the points together with garden wire.
2
Place the heart shape over a double layer of chicken wire, and cut out a slightly larger heart with wire cutters. Tie the chicken wire to the wire frame with garden wire, leaving an opening through which to fill it.
3
Fill the heart with pretty pebbles. (Try large, colored glass pebbles if you want to up the bling factor.)
4
Close the opening; attach a sturdy chain and hang.