The episode uses heavy symbolism involving gold and sapphires, contrasting the beauty of the gems with the "rot" Tommy feels inside.
Despite his personal tragedy, Tommy hosts a meeting with Oswald Mosley, Diana Mitford, Captain Swing, and Jack Nelson. He successfully manipulates them into a partnership, positioning himself as the bridge to the Irish working class.
Arthur confronts a shipyard worker who is leaking information. It is revealed that Billy Grade is being coerced by Jack Nelson’s men to provide intel on the Shelby family. Notable Details
The episode closes with Tommy standing alone, facing his mortality while preparing for one final "big job" before he dies.
The episode "Sapphire" (Season 6, Episode 4) is a pivotal moment in Peaky Blinders , focusing on grief, curse, and political maneuvering. Key Plot Points