Off-topic:
Nylene blue made a video where he transform (serendipitously) glass beads to very beautiful "jowels" through supracritical impacts.
I wonder if this paradigm has been tried for jewels and if it could make more interesting lab grown diamonds.
Not to nitpick, but just to make sure this wonderful creator gets credit where credit's due: his youtuber name is NileRed, and NileBlue (not Nylene blue) is the name of his secondary, less serious and less scripted, channel.
https://youtu.be/JslxPjrMzqY