Ok, I zoomed out a little, anyone want to give it another shot? Lol It is not plastic, it is not fabric, it is not edible...toxic if eaten in fact, and it is hard
It is not cut glass and this particular piece is not a gemstone which is defined as "a precious or semiprecious stone that is cut, polished, and used in a piece of jewelry." This is a tumbled stone and since arizonacook guessed jade, which is more specific and I said it is a green stone, I am inclined to wait for the type of stone.
Not a bad guess but not what it is, this mineral has a high copper content which gives it its green color