A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, check } from '@wordpress/icons';
<Icon icon={check} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M16.7 7.1l-6.3 8.5-3.3-2.5-.9 1.2 4.5 3.4L17.9 8z"></path></svg>
check – WordPress Icon Library