Robber barons of the 19th and 20th centuries impressed their peers with stately homes, elaborate greenery -- and ornamental statuary carved from tufa, a calcium carbonate rock. Even if you don't have ...

Hypertufa (pronounced hyper-toofa) is a type of artificial stone. It was first created in the mid-19th century by mixing sand, peat, various volcanic aggregates and cement. It's relatively lightweight ...