Elegant Opal

"As the name suggests the elegant opal is used for elegant things. Since this is subjective it's been used in everything from wedding rings to slim computers to robotic 'entertainers.'" - The description found in eng.translation

A Elegant Opal is a pickup you can find in Cobalt's Classic Survival, Waves Survival, and Story Modes. In Classic Survival, it could be converted to volts, but in Waves Survival and Story Mode, it is converted to volts upon being picked up.