With a surprisingly small number of specialized items, it is possible to grow opals in a small home setup. For the process here, the only thing that's a little hard to get ahold of is tetraethyl orthosilicate.
Note that growing pretty opals make take a little more time and dedication. — Read the rest
Original Link: https://boingboing.net/2020/12/14/how-to-grow-an-opal-at-home.html
