Contemporary use of manmade stone goes back 30 years
or so to the Napa Valley of California. A lightweight
concrete mix using pumice as an aggregate was poured
into molds cast from locally available stone. While the
product was ideal for the local area,
this volcanic-looking stone seemed
out of place elsewhere in the country,
since nobody but the West Coast had volcanoes. Over time,
manufacturers sprung up around the country, using molds made
from stone available in their local marketplaces.
Now, manufactured substitutes are available for virtually any
type of stone, and the products are generally indistinguishable
from the real thing.
APRIL JLC 1999
by Steve Thomas
molded concrete is