A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, trendingDown } from '@wordpress/icons';
<Icon icon={trendingDown} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path d="M4.195 8.245a.75.75 0 011.06-.05l5.004 4.55 4.025-3.521L19 13.939V10.75h1.5v5.75h-5.75V15h3.19l-3.724-3.723-3.975 3.478-5.995-5.45a.75.75 0 01-.051-1.06z"></path></svg>
trendingDown – WordPress Icon Library