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

  _  _      ___      _____    _    _     _  _   
 | \| ||   / _ \\   / ____|| | || | ||  | \| || 
 |  ' ||  | / \ || / //---`' | || | ||  |  ' || 
 | .  ||  | \_/ || \ \\___   | \\_/ ||  | .  || 
 |_|\_||   \___//   \_____||  \____//   |_|\_|| 
 `-` -`    `---`     `----`    `---`    `-` -`