The Liquid GlassThinking Putty is almost imperceptible at rest. However, once you start playing with it, the putty begins to cloud. Depending on how much you play with it, this putty can either appear clear, like thick glass, like ice, or even unpolished calcite (crystal). Like other putties, it can be stretched, bounced, and torn in half. Each tin includes 90 grams (1/5 lb) of putty.