Triumvirate of Terror! - S3-E8
Continuity mistake: When the camera first shows Jimmy, he says "Where the heck have you been" and looks up to his left then straight forward. The shot changes to a close up and suddenly he is looking up to his right. (00:00:15)
Chosen answer: The rings represent what is called the "Emotional Spectrum". Red, Orange, Yellow, Green, Blue, Indigo, and Violet. Where Green is the representation of will, the Star Sapphires are given violet rings, which represent the emotion of love.
MasterOfAll