A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, separator } from '@wordpress/icons';
<Icon icon={separator} />
<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false"><path d="M4.5 12.5v4H3V7h1.5v3.987h15V7H21v9.5h-1.5v-4h-15Z"></path></svg>
separator – WordPress Icon Library