Pebbles

Pebbles are a tiny Gems who inhabit the walls and floor of Pink Diamonds room.

Appearance
All the Pebbles are small in size and have gray skin. They all have two eyes, which are black. The Pebbles vary greatly in appearance, more so than most other Gem types. Their gemstones are round and are in different shades of gray, and are unfaceted.

Personality
The Pebbles were shown to be good friends with Pink Diamond and by extension, Steven.

Whenever another Gem enters Pink Diamond's room, they all run and hide for unknown reasons.

Role
Pebbles appear to be servants and have the job of building and sewing things, such as beds and clothes. Additionally, they appear to be capable of significantly manipulating their physical forms at a whim. Some Pebbles lack humanoid forms all-together, such as Comby.

Trivia

 * In "Catch and Release", Peridot uses "pebble" as an insult against Steven. This may be referencing the Pebbles and possibly implying that they have a low status on Homeworld. Squaridot also commonly uses "pebble" as an insult in Save the Light.
 * They resemble the mice from the Disney movie, Cinderella.
 * One of the Pebbles is voiced by Zach Callison