Talk:Demantoid/@comment-33274462-20191202171701

The "same type of gem, same VO" trend seems to follow the Rule of Cool. Different subtypes of Pearl and Zircon share a VO, whereas Diamonds, Quartzes, and now Garnets do not. Although Jaspers and Carnelians (two subtypes of Quartz), as well as Sapphires and Padparadschas, do. I'm ignoring Ruby-Sapphire, because despite them being the same type of gem in real life (Corundum), they're clearly depicted in the show as being different types.