A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, error } from '@wordpress/icons';
<Icon icon={error} />
<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false"><path fill-rule="evenodd" clip-rule="evenodd" d="M12.218 5.377a.25.25 0 0 0-.436 0l-7.29 12.96a.25.25 0 0 0 .218.373h14.58a.25.25 0 0 0 .218-.372l-7.29-12.96Zm-1.743-.735c.669-1.19 2.381-1.19 3.05 0l7.29 12.96a1.75 1.75 0 0 1-1.525 2.608H4.71a1.75 1.75 0 0 1-1.525-2.608l7.29-12.96ZM12.75 17.46h-1.5v-1.5h1.5v1.5Zm-1.5-3h1.5v-5h-1.5v5Z"></path></svg>
error – WordPress Icon Library