Brightness 2 icon

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24"><g fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"><path d="M9 12a3 3 0 1 0 6 0a3 3 0 1 0-6 0"/><path d="M6 6h3.5L12 3.5L14.5 6H18v3.5l2.5 2.5l-2.5 2.5V18h-3.5L12 20.5L9.5 18H6v-3.5L3.5 12L6 9.5z"/></g></svg>