A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, formatItalic } from '@wordpress/icons';
<Icon icon={formatItalic} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M12.5 5L10 19h1.9l2.5-14z"></path></svg>
formatItalic – WordPress Icon Library