Twotone Circle icon

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24"><circle cx="12" cy="12" r="8" fill="currentColor" opacity=".3"/><path fill="currentColor" d="M12 2C6.47 2 2 6.47 2 12s4.47 10 10 10s10-4.47 10-10S17.53 2 12 2zm0 18c-4.42 0-8-3.58-8-8s3.58-8 8-8s8 3.58 8 8s-3.58 8-8 8z"/></svg>