Prettiest Slag Color Ever Made - The color of Westmoreland's green slag is so bright and clean looking with a lot of good contrast and no muddiness. This large bowl has 3 feet each one formed by a set of 3 large balls. It has a ground bottom and is 10-1/2 inches in diameter and 4 inches high. The Westmoreland Glass Company line number for this piece is 1067-1, and is considered rare. It is in excellent condition.