Talk:Gems/@comment-27096292-20160425133951/@comment-25247236-20160427031713

I think they're named based on the way the look compared to actual gemstones (or their chemical formulas, who knows), and not actual gems on their bodies. For example, Malachite gems have a streaky green color like Malachite's actual body, while a Sardonyx gemstone "can" be black and white.