annaruiter Hi, the frames are 1 mm thick, so the metal hearts are not very fragile. The nylon ones are a bit flexible, but the metal ones are completely rigid.
annaruiter The Premium Silver one is polished more extensively than the Polished Silver one, so it becomes even more smooth and shiny. The heart in the pictures is Polished Silver, so you can see that's already pretty smooth.
This cube pendant is now available in my shop!
You can personalize it by choosing the letters you want, to make it the perfect gift for your loved ones (or yourself ;) - http://shpws.me/MJSC