Jade Stone Green, 33lbs Bulk Pack. ISO Type 5 high strength die stone gypsum. Work time: 5-7 minutes; Set time: 10 minutes. Jade Stone stacks well after mixing yet flows readily under the least vibration.. Popular for its smooth jade-like surface, high strength and low setting expansion.. It is compatible with all types of impression materials.. The light, pastel green and blue colors of Jade Stone provide excellent contrast to casting waxes.. Jade Stone stacks well after mixing yet flows readily under the least vibration. Popular for its smooth jade-like surface, high strength and low setting expansion.