I tagged post #629613 with "broken" before seeing "friends" on it, and realized that the necklace is one of those friendship charms the two people put together to be a whole. What would be a good tag for something like this, if there isn't already one?

I guess just friendship_charm would work. I wouldn't think there's such a huge amount that we'd need to subdivide.

Created a Wiki page to explain (or try to) what it is for those who are curious.

Please improve upon it if you can, I'm not the best with.. descriptive wording.