Police in Trafford say 21-year-old Robert Driscoll, of Pitcairn, stole the ring from his girlfriend's cousin's home then gave it to 20-year-old Crystal Yamnitzky. Authorities say Yamnitzky posted a picture of the new ring online, saying it was a gift from Driscoll.
Authorities say Yamnitzky's cousin had already alerted police that the $12,000 ring and other jewelry had been stolen.
Police soon questioned Yamnitzky and tracked down Driscoll. Officials say he'd fled and sold all the jewelry for $250.
Driscoll and Yamnitzky were arraigned Tuesday on charges including receiving stolen property and unable to post bail. It was not clear if they had attorneys.