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import { Icon, postCommentsCount } from '@wordpress/icons';
<Icon icon={postCommentsCount} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M13 8H4v1.5h9V8zM4 4v1.5h16V4H4zm9 8H5c-.6 0-1 .4-1 1v8.3c0 .3.2.7.6.8.1.1.2.1.3.1.2 0 .5-.1.6-.3l1.8-1.8H13c.6 0 1-.4 1-1V13c0-.6-.4-1-1-1zm-2.2 6.6H7l1.6-2.2c.3-.4.5-.7.6-.9.1-.2.2-.4.2-.5 0-.2-.1-.3-.1-.4-.1-.1-.2-.1-.4-.1s-.4 0-.6.1c-.3.1-.5.3-.7.4l-.2.2-.2-1.2.1-.1c.3-.2.5-.3.8-.4.3-.1.6-.1.9-.1.3 0 .6.1.9.2.2.1.4.3.6.5.1.2.2.5.2.7 0 .3-.1.6-.2.9-.1.3-.4.7-.7 1.1l-.5.6h1.6v1.2z"></path></svg>
postCommentsCount – WordPress Icon Library