JD_MAN;2383834; said:It can be, but there are also a lot of knock off brands that are pretty cheap and basically the same material.
Just make sure if one uses another brand that it doesn't have a built in mildewcide/fungicide as some do. Corian is very expensive and ranks right up there with acrylic. I used Corian as an overlay over 2" plywood (2 x 1") on the bottom of a 10' x 30" x 30" 100 year old plus antique aquarium. It worked great. Silicone sticks to it great too!