Toni Chandler of Austin was devastated last December when the ring slipped off at Grand Teton National Park.
The marine biology graduate says she made a snow angel, got up, removed her gloves to shake off and the ring flew from her hand.
KXAN-TV reported Sunday that a couple from Cape Cod., Mass., visited the campsite last spring and found the ring.
Barb Walsh spotted something shiny in the gravel. Chandler's name was engraved inside the ring but Walsh had little luck finding her.
Walsh and her husband had friends over for dinner last week, including a retired law enforcement officer. His knowledge of investigating helped Walsh locate Chandler.