md brightness 6

const MdBrightness6Icon = (props) => (
  <svg 
    xmlns="http://www.w3.org/2000/svg" 
    viewBox="0 0 24 24" 
    width="24"
    height="24"
    fill="none" 
    stroke="currentColor" 
    strokeWidth="2" 
    strokeLinecap="round" 
    strokeLinejoin="round" 
    {...props}
  >
    <path d="M0 0h24v24H0V0z" fill="none"/><path d="M20 8.69V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12 20 8.69zm-2 5.79V18h-3.52L12 20.48 9.52 18H6v-3.52L3.52 12 6 9.52V6h3.52L12 3.52 14.48 6H18v3.52L20.48 12 18 14.48zM12 6.5v11c3.03 0 5.5-2.47 5.5-5.5S15.03 6.5 12 6.5z"/>
  </svg>
);