This is an insert for the heart pendants in my store. The frame is printed in stainless steel and the insert in nylon.
This is my third version, it is more generic and has also been modified to make it easier to flex in order to insert it in the frame. I don't have any of the printed version yet so I'm not sure how good the fit will be. Please watcht this space for updates.
Update: I have not printed this design yet, but I did receive the original design and frame and they do snap together, but not easily. This design should snap into my two frame designs with no trouble.