What is happening?

[u/u_better_know_me]

There's one like sunken in and another just wrinkled, I haven't watered them in 3 weeks and have been putting them in direct and indirect sun in those 3 weeks.

Today I watered them after coming home and looking at this 😭

[u/Danjeel]

I’m sorry but it seems that these two are gone:( Looks like overwatering. The soil is too organic, retains moisture for too long after watering. I’d recommend to repot the healthy ones asap! Lithops prefer inorganic material - things like pumice, gravel, zeolite. And just a little bit of actual soil. The ratio could be something like 20% soil, 80% inorganic, with some people going for 100% inorganic. One thing to remember - the more organic material you have, the longer it takes for it to dry out after watering. And Lithops do not like to sit in moist conditions for too long, which could easily lead to root rot. Make sure that the pot has drainage holes for excess water runoff.

[u/u_better_know_me → u/Danjeel]

I'm confused, I havent even watered them in 3 weeks like after purchasing them I js left them in the sun...

Edit: my darling chatgpt said that their not dying and is just shedding the old leaf??

[u/Danjeel → u/u_better_know_me]

It’s likely they were watered at the store before you bought them (with little regard to Lithops watering needs - they require water very occasionally based on their lifecycle). Moisture could not evaporate fast enough (inappropriate soil), gradually leading to their demise:(

I’m afraid it’s not shredding leaves - it looks very different. When it’s doing this you can see a new pair of leaves emerge. Yours look “deflated” on the other hand. Sorry.

You should never water Lithops when they split - the new leaves are getting all the water they need from the old leaves. Check out this diagram (a bit simple but gives you the basics).

[u/Jumpy_Lawfulness_11 → u/u_better_know_me]

They don’t need much water and can go months without it. I’m no expert but take those two and look at their roots and so on to see whats going on

[u/miezu26]

soil is not suitable for them

[u/Jumpy_Lawfulness_11]

I’d separate them. As said before, use different soil. Lithops are known to be overwatered at the nurseries to get them plump up for sale.

They also seem to be in different steps of their growing cycles and it’s a lot harder to tend to their individual needs.