Lalafell, huh? We're I'm from, my folk are called Harvins! But that's besides the point. Crystalians are folks with pointy ears like yours, but the main thing that sets 'em apart is a special organ that they call a 'heart of ice'. It lets 'em use ice magic like a pro! But it also causes 'em to freeze everything around them uncontrollably, so they tend to stay away from other folk.

[More pondering continues as Yodarha tries to connect some dots he never really thought about connecting before.]

I s'pose they're called Crystalians 'cause they build their homes and other structures out of big, intricately made ice crystals!