The result looks alright at 64×64 pixels but it starting to be cluttered and losing detail in the smaller 32×32 pixel size. Taking some elements off to make it cleaner should solve that problem easily.
I hope you enjoyed this one as much as I did writing it. Recently, I used a very similar chest design in a puzzle game for a friend.
Keep playing with the concept, create chests with iron frames, spikes, skulls, holding diamonds and rubies or being plain empty or broken. Enjoy!
Here’s the download file:
Inkscape SVG of the Treasure Chests