What kind of slate is this???

What kind of slate is this??? Images

What kind of slate is this???

What kind of slate is this??? Description

Anyone know what type of slate this is (or a "generic" name for it)? The name of the company is "Jeffrey Court". The slate is called "Sequoia Tumbled Slate". It is various shades of light to medium blue (which is the dominant color) with shades of beige and (http://maplered.com) gray. It had a dull, smooth honed finish. I saw it at the local Expo Design Center.

Thanks,
Ira