I remember reading some threads about diamond mining with pyrex. I know a lot of people, including me, were doubtful it could be done. I have benefited a lot from this site and would love to contribute back anything I can. So… here is my contribution.
Yes, it can definitely be done. I have no idea how I am doing it. Sometimes it works and sometimes it doesn’t. This batch was winterized in ethoh and reduced to a viscous liquid in the roto. Then I slurped n-pentane into the roto flask, let it dissolve, and poured into the pyrex. Stuck it in the vac oven at 37C and ambient pressure. I am thinking maybe the slight amount of ethoh left slowed evaporation? I honestly dunno. But it’s working. This crystal is just from the side of the pyrex after 4 days.20210228_205526|375x500