TWO challenges will be ending at the end of May. The first one is #20 - "Something Natural", and the other is #21 - "Emotion".
Judit (StIglice) picked the "Something Natural" challenge for us, and describes it like this:
"Create a piece using at least 50% (the more the better) natural materials: minerals, stones, pebbles, etc.
There is no restriction on the base, the colors, the theme, the style or the form of the natural materials."
Here's a look at the six gorgeous pieces that have been entered so far.