Bismuth

Bismuth is probably the most Crystal Gem out of everybody, She created a weapon called the breaking point that can shatter any gem and diamond on Homeworld but Rose Quartz disagreed with the idea and put Bismuth in a bubble in lions main for thousands of years. Steven then frees her only to be put in a bubble again then freed once again to attend Ruby and Sapphires wedding. Bismuth now crafts suits and armor at Little Homeschool.