"Crystal Night" by Egan? https://www.gregegan.net/MISC/CRYSTAL/Crystal.html
Yes, it indeed is! Thank you!
I looked it up on Google (which is usually very, very good at these types of things) but couldn't find it.
Yes, it indeed is! Thank you!
I looked it up on Google (which is usually very, very good at these types of things) but couldn't find it.