Some people forget that the gems’ bodies are holoforms of what they see themselves to look like. This means the character can be as skinny or fat as they please and probably any colour they feel like. Racial stereotypes are not a thing because of their “skin” colour (peridot being green and amethyst being purple for example). The only differences for gem types is a classification ranking based on their gem value. So literally shut up about fat shaming and racist shit when it comes to gems because that holoform is their personal representation of themselves and it is subject to change.