ARTIFICIAL STONE COMPRISED OF WASTE PLASTIC MATERIALS ...
29. The artificial stone of claim 21, wherein the artificial stone has a weight from about 2 grams to about 20 grams. 30. The artificial stone of claim 21, wherein the artificial stone is about 60% lighter than crushed stone. 31. The artificial stone of claim 21, wherein the artificial stone has a volume from about 5 cm 3 to about 10 cm 3. 32.