For 石 tsio̍h, Baxter-Sagart has it as *dAk. Capital A means they are unsure which type of a-like non-pharyngealized vowel sound it was. If we just apply the Min ts- was *st- in OC rule, it would be something like:
Taigi
OC
PIE
Proto-Germanic
German
English
tsio̍h
*stAk
*stoyh₂-nos
*stainaz
stein
stone
The PIE root for stone was also /*steh₂-/. 石 when used as a weight measurement is usually pronounced as dan in Mandarin, as mentioned previously in this thread.
So perhaps at some point in time 石 was *stan in some form.