What is Tufa Stone? (with picture) - wiseGEEKDec 29, 2016 . Tufa stone is a type of soft, porous line. It's often used for making molds for sculpture, and is very popular for planters.tufa stone crusher,Tufa Casting – Garland's Indian JewelryOct 13, 2015 . Tufa stone is a compressed volcanic ash material that is found on the Navajo reservation. It is easier to carve than sandstone and its porous.
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