Mullens Road West (closest here) is about 20 metres from the signposted “Gemstone Beach” entrance. Google Maps Streetview, http://www.google.co.nz/maps/@-46.275423,167.7315998,3a,75y,291.22h,73.82t/data=!3m6!1e1!3m4!1siDUuvlLcedphunp6ufQuNg!2e0!7i13312!8i6656?entry=ttu