Companion Fairy is a sparkly, iridescent microglitter top coat, meant for layering over other polishes. It shifts through turquoise, blue, teal, and cool green. 

In several Legend of Zelda games, Link has a fairy partner who aids him in his quests, and in Ocarina of Time, each Kokiri has a guardian fairy who is their friend and constant companion. This polish was named for those fairies. 

Rather than offering sets, purchasing three or more bottles of polish from the World of the Goddesses collection in a single order will give a discount of 3.5% on all World of the Goddesses collection polishes in the order, which will be reflected in the cart under the line "World of the Goddesses collection discount."

The last photo shows what Starlight Polish 15mL and 7.5mL bottles look like.