Board Thread:News and Announcements/@comment-6586724-20141201070843/@comment-4977079-20160303045954

Personally I'd go with the lower-case. It just feels wrong to me to have them in upper-case, maybe because I'm so used to the gem names being in lower-case in the books. I don't see any reason why the gems names should be capitalized anyway, since they are technically just gems (though very powerful ones) and usually gem names (and object names in general) aren't capitalized. It's usually only people or place names that are capitalized.

What I noticed is that most characters seem to refer to the gems in the Belt as the great gems, to differentiate between the gems in the Belt and the ordinary gems.