Content Warning: This section describes and discusses the source text’s treatment of death, murder, and sexual violence.

When Margot meets Lucy, she notices Lucy’s necklace with diamonds in the shapes of stars and constellations, remembering that Eliza wore a similar necklace. The novel reveals how Lucy took the necklace from Eliza after her death, and Margot then takes the necklace from Lucy’s body at the novel’s end. The necklace and the stars on it symbolize the energy Eliza had in her life, which both Lucy and Margot want to emulate. Whoever possesses Eliza’s necklace symbolically inherits Eliza’s charisma and attractive power. While Eliza was alive, she was popular and commanded the attention of everyone around her, and Margot notes that everyone loved Eliza’s personality, but she rarely returned that love. Thus, in Lucy’s pursuit of emulating Eliza’s life, she wears the necklace, sets her phone background to an image of stars, and plasters stars on the ceiling of her room.

The constellation, specifically Gemini, adds another layer of symbolism to the necklace, as Gemini, the Twins, appears as two people holding hands. Lucy points the constellation out to Margot in a moment of bonding, and it comes to represent their bond of friendship.