mostly ice rock and dust
Two main reasons. Firstly, the inner planets are a lot less massive, so their overall gravitational pull is lower than the larger gas planets. Secondly, there is, or has not been, as much material closer to the sun. As a result, the inner planets have captured fewer moons between them. These tend to be the cause of the rings in the outer planets, where orbiting bodies can break up and scatter around the planet in discs.
The rings around planets are called planetary rings. They are made up of countless small particles, ranging in size from micrometers to meters, that orbit around the planet due to gravitational forces.
Both inner and outer planets in our solar system have rings. The outer planets with rings are Jupiter, Saturn, Uranus, and Neptune. These rings are made up of pieces of rock, dust, and ice. The inner planets, like Earth and Mars, do not have rings.
The material which make up the rings come from a variety of sources. They can be formed frommaterial from the original protoplanetary disk which did not coalesce into the main planetary body;material from collisions between a "moon" and meteorites;ejecta from cryovolcanoes - volcanoes whose eruptions eject volatile materials such as methane, water or ammonia. These condense into "ice".
The four planets with rings around them are Saturn, Jupiter, Uranus, and Neptune. Each of these planets has a system of rings made up of ice, rock, and dust particles that orbit around the planet.
The planets Saturn, Jupiter, Neptune and Uranus have rings. There are great number of rings around some planets, such as Saturn. These rings are often grouped into ring bands or groups of rings. Saturn has about 14 bands, Neptune has 5 and Jupiter has 4 and I give up on Uranus. If you want to figure all this out, scroll to the bottom of the link below and you will find links to a discussion of each planet's rings
Rocks, dust, and other space junk
The four gas giants, Jupiter, Saturn, Uranus and Neptune, have rings. The rings are made up of dust paricles and ice.
dust
Jovian planets have rings because their strong gravitational forces can capture and maintain orbiting particles and debris that form the rings. This is due to their larger size and mass compared to terrestrial planets. The rings around Jovian planets are made up of rock, ice, and dust particles that orbit around the planet in thin bands.
All of the Gas Planets or Outer Planets have a ring system.Jupiter has 3 rings.Saturn has 13 rings with many sub divisions.Uranus has 13 ringsNeptune has 5 rings
The material that makes up Mount Rushmore is granite.