Engineered stone
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Engineered stone is a composite material comprising rock and resin. It is used primarily for kitchen countertops. Breton, an Italian company, is the dominant supplier of equipment for making engineered stone.
[edit] The Breton process
A mixture of 93% quartz and 7% polyester resin is pressed into slabs (or larger blocks) using Breton's "vibrocompression vacuum process". After curing, the slabs are cut into sheets.
More information can be seen at Breton's Web Site http://www.breton.it
[edit] Links to manufacturers
Silestone and CaesarStone are two of the leading manufacturers.