None of them. Try comets and some of the smaller satellites.
Pluto is a solid planet. Pluto is made mostly of ice, although the core is most likely rock with metal in it.
Eris is made mostly of ice.
Well, Pluto was the planet which is made of a lot of ice (perhaps about half of the planet's mass), but in 2006 the IAU redefined Pluto as only a Dwarf Planet. The Pluto average temperature is about -229 degrees Celsius.
Pluto is probably nearly 50% water ice. Of course, it was demoted to "dwarf planet" status.
Uranus is mostly gas by volume, however there is a solid inner core of the planet that is composed of ice and rock.
Saturn does. They are made up of mostly Ice, rock and dust particles by the way ... Seriously?
The planet Mars has glaciers made of water ice, mostly located in its polar regions. These glaciers have been observed by orbiters and are thought to be composed of a mix of water and carbon dioxide ice.
The answer is Pluto. Pluto isn't a planet anymore so there is no planet made up of rock and ice.
Neptune is made of ice and gas
Pluto
Pluto, Although Now Scientists Are Still Wondering Wether It Is A Planet Because It Is Much Smaller And Because It Is Mostly Ice And Rock! adding: Pluto no longer planet
Mercury is a rocky planet.