What would you do if you accidentally gave your diamond engagement ring to a homeless person? That's what happened to Sarah Darling from Kansas City, who was heading home from work and stopped to give a homeless man some money. In the process, though, she accidentally dropped her engagement ring in his donation cup.

Darling says she didn't realize her mistake until the next day. Nearly 48 hours later she was able to track down the man, Billy Harris and he still had the ring.

This morning on "Starting Point," Sarah Darling talks with Soledad about the incredible generosity of a stranger.

"Even people who were in a lesser need situation may not have given it back. He may have sold it. He was actually offered like thousands of dollars on the spot for it, and he turned that down. And it's so amazing to me," she says.

"I really just hope that that my - my kind of flightiness in that moment leads to something really good for him," she adds.

Darling and her husband set up a GiveForward.com site for him. It's GiveForward.com/BillyRay and as of this writing, more than $7,000 has been raised.