From the tv show "Steven universe" Peridot was originally a Homeworld Gem technician, working for the diamonds. The diamond that created her was yellow diamond. peridot was stranded on earth and through Steven and the crystal gems she learned to love the earth. Currently she resides in a barn. more bark than bite, when things get scary she cowers in fear and hides behind other capable fighters. When she cowers she hides the fact she is afraid and plays it off as a strategic move. 