I'm on my lunch break and don't have too much time but I'll share this link to the best info you can get.

Link below.

Here is a link that might be useful: Hammertime

Sweet Baby Jesus, that's a lot of information! Thank you!

Twice a year, think about watering them. They'll be happy then. Just kidding. But it's way too easy to overwater them.

I remain rather baffled by the what is the best soil mix, from actual stuff I can find. Gritty but not too gritty because they have fine roots. Never water but you have to water some to keep the roots from dying off... contradictions.

The author of that fine link provided above says soil mix is basically 50% "loam" but without humus, and 25% each of pumice and coarse sand. What does he mean by "loam" as far as his purposes?

I've tried some gritty Bonsai type mixes but they seem to stay way too wet for days, actually worse than the bagged cactus mix with peat, so I'm trying to mix in lots of pumice. I bought a large bag of pumice online, and strain it. Perlite is cheap and available, but I don't like how it floats.

I would like to try growing lithops again. Any suggestions on the best place to purchase them? I prefer plants not seeds at this point. Thanks for any help.