Crystal Block

One of the few blocks that carries its own color rather than taking one from paint, shifting between magenta and blue as you look across a wall of it. Builders use it for ceilings, accent lines and anything that should read as magical without a lamp hidden behind it. There is a full furniture set to match, so you can do a whole room in it instead of using it as trim.

It looks expensive because Crystal Shards look expensive, but the shards grow back on pearlstone in the Underground Hallow. Clear a cave, come back later, and it has restocked itself. That makes this one of the few decorative blocks you can use in bulk without rationing, so do not design a build around a small stack when you could farm the same cave three times.