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="M16.5 7.5 10 13.9l-2.5-2.4-1 1 3.5 3.6 7.5-7.6z"></path></svg>
check – WordPress Icon Library