True, but "marshmelon" was dialogue, so it would have appeared in the script. Visual details like jewelry or hairdos or costumes are not typically mentioned in a movie script unless their appearance is somehow relevant to the plot. ("The sacred dagger bears a star-shaped symbol that matches Ilonna's tattoo.") Screenplays mostly consist of action and dialogue. There's usually very little in the way of actual physical description, because that's not the screenwriter's job. That's up to the art director, the costume department, the production designer, etc.
In other words, it's unlikely that the script would mention an earring at all, let alone include any scenes or dialogue explaining it. That's not how scripts are written.
This actually drives me nuts when I'm writing novelizations, because the scripts seldom tell me what anything looks like. The script will say something like "She walks into the room and all heads turn," but not actually tell me what she's wearing!