'Stones' in the Bible

(The gold of that land [is] good; bdellium and onyx stones [are] there.)

And he lighted upon a certain place, and tarried there all night, because the sun was set; and he took of the stones of that place, and put them for his pillows, and lay down in that place to sleep.

And Jacob said unto his brethren, Gather stones; and they took stones, and made an heap: and they did eat there upon the heap.

Laban said, "This pile of stones is a witness of our agreement today." That is why it was called Galeed.

"Look!" Laban added, "Here is the stack of stones and here is the pillar that I've set up between you and me.

This stack is a witness, and so is this pillar, reminding me not to cross beyond this stack of stones, and reminding you not to pass by this stack in my direction, intending to cause harm.