Board Thread:Off Topic/@comment-27447621-20160730160356/@comment-4010415-20160826234820

SomeoneYouUsedToKnow wrote:

So in the end, I've decided on this headcanon: The color name must only fit CNR out-of-universe, even if it doesn't make sense in-universe. In which case then I guess OCs could indeed be named after cities and such.......if they still fit CNR in some way at least. (For example, you say Antartica, I think of cold snow and ice everywhere). So, what you're saying is, rubies cannot possibly exist in Remnant, so Ruby's name fits the CNR out-of-universe but not in-universe.

The problem is that rubies are the same material as sapphires, and apparently, sapphires exist in Remnant, considering that Weiss' timeskip concept art states that her new outfit has sapphires on it.