Board Thread:General Discussion/@comment-26202203-20150314002249/@comment-26202774-20150314035912

i don't think the names have much to do with power though--it's probably just the way the gems are named. there's rose quartz, but also purple quartz, which is popularly known as amethyst. diamond also has multiple different colors, so maybe they're planning to use another variation later.

lapis lazuli is an example of a gem with two names, although their name doesn't follow the "color, gem type" format.