I bought 4 items, all minis - daily stone with travel case, sleep stone, grounding stone, face balm.
Using the face balm & grounding stone so far.  
I am 78, pretty fit & active for my age and interested in taking care of myself.
With SO many skin care products out there, I am looking to simplify and find a few products that I can rely on.
Love the face balm because it is moisturizing  without being oily, and seems to effectively soothe & refresh my skin. Works on my dryer areas as well.
Enjoying the grounding stone too, for the same reasons.  Being 5’ 10”, I have a lot of territory to cover,  so the mini stone is rapidly decreasing. 
Do wish prices would be a bit lower; I haven’t figured out yet whether I will be able to afford total commitment to this skin care… but I think I would like to!