Crystal growth in space is like the go-to experiment. Basically every early station and Shuttle did crystal growth. Like, the Salyuts and Skylab did crystal growth. No one has made a viable business case out of it yet. I think Varda wanted a cool sounding proof of concept to get more VC money. Who knows if they can close the business case with something like this, but I’m glad they extracted money from rich people to do cool stuff in space and develop some new technology. Their capsule is pretty neat.