They write that growing Lithops at home is an easy task.
It is only necessary to take into account the annual growth cycle of Lithops.
Which consists of four periods.
It:
growth period, dormant period, flowering period, renewal period.
Correct watering, depending on the period, is the most important thing in the care of Lithops.
During the dormant period (from June to August), Lithops are not watered.
During the flowering period (from August to October), that is, during the rainy season, Lithops are watered abundantly, but rarely.
The soil must be completely dry between waterings.
I tried, it seemed to me that I was doing everything right and was very surprised and upset when my Lithops died :-(
And now, finally, for the first time, my Lithops not only did not die, but also bloomed!
And this is "to blame" :-))) 
The photos I were taken with a Lenovo TAB 2 A10-70L tablet
pests "hooligans" ate my Lithops, it is a pity that I did not catch them during the crime! This eaten Lithops did not bloom.