Trying something to help with your search.
I cannot find it on Google, but here
is how to use an image in a Google Search. To fine tune that search, after your results, you can also add a few descriptive words. I added "candle mold" after the initial search and got this:
ETA: If you add "candle mold supplies" instead, you get more links to suppliers. Maybe try a few variables in the descriptor words and you might find it or something that you like almost as much. I saw some pretty cool looking molds on there!