Sirius grew up with diamonds and riches beyond imagining; to have that taken away abruptly on the night he turned sixteen left him stark and lost. Remus couldn't afford, of course, to give Sirius any of the luxuries he had back, so Remus deigned to do something he never would have considered had it not been his Sirius. Remus stole from his mother. A week later he gave Sirius a diamond earring that had formally been a ring, a woman's wedding ring. Any guilt Remus felt melted away at the tears pooling in the corners of Sirius' eyes.