Damn they are fat, dark and impressive now ^^ GJ
Can’t tell really, just feeling in seeing the reparttition : Cal.
DON’T TASTE IT IN ANY WAY ! (lol someone have smoked hardly)
Scratch with a knife enough, put it in a glass. Add around 10 ml of your RO water, test the PH.
If it’s a lunar PH (close to two digits : “limestone”). This powder remember me the old days when i was growing in clay pots.