statue of liberty was made out of green asphalt and lucid copper.. by RC
Green stone is a plant that is green looks Ike a stone and it can flaps like a bird.
The name of a green stone is an emerald.
If your stone turned green it probably has moss growing on it.
emerald
water stone
they are made out of stone
Originally the boards were made of slate which is a black stone. They were eventually replaced by wooden boards painted green but the name still stuck.
stone
Michigan's state stone is the green stone.
Emeralds and jade are both precious green stones.
Jade