dont know what kind of rock is this...i found this rock on a trip to Oaxaca,
in water, the "veins" acquire more of a white color..it is very heavy for the size.
thanks
https://ibb.co/fFZGZk
https://ibb.co/kc9iEk
https://ibb.co/bH9iEk
https://ibb.co/goziEk
https://ibb.co/gpk10Q...