User blog comment:DancePowderer/Deus Ex Lacrima/@comment-7418318-20140209012913/@comment-1595565-20140209015523

I don't think it's a general term. All the lacrima we've seen have been crystalline in nature. For instance, the magic stone used in the construction of prison cells was never referred to as lacrima. Lacrima's latin meaning would also suggest it's exclusively crystalline.