Board Thread:General Discussion/@comment-26265257-20150401005247/@comment-25365147-20150410020629

Yeah, I too had the theory that gem placement might impact personality, abilities, or both. Pearl and Peridot have some similarities in personality, but they're also the only Gems we've seen make holograms. We'll probably have to see more Gems to confirm.

On a side note... Do you think Gems with certain abilities or gem placements get created for specific purposes?