In a back story of Charlie's he goes to visit Liam still strung out, to try and get the band back together.Liam is all cleaned up, has a wife and a child- litle girl if I remember correctly.Why didn't Charlie give Liam the ring back then? Liam only gave Charlie the ring as Liam said he(himslef) was too strung out to ever get married , have a kid,and Charlie was the only not on drugs rock star. Liam should have asked for it back. Charlieshouldahve given it back then.
I hope Claire finds it at some point if it doesn't get blown up.