Text this: Lightweight bricks made of diatomaceous earth, lime and gypsum

 _    _    _    _     ______     ___              
| \  / || | || | ||  /_   _//   / _ \\    ____    
|  \/  || | || | ||  `-| |,-   | / \ ||  |    \\  
| .  . || | \\_/ ||    | ||    | \_/ ||  | [] ||  
|_|\/|_||  \____//     |_||     \___//   |  __//  
`-`  `-`    `---`      `-`'     `---`    |_|`-`   
                                         `-`