A beachcombing hobbyist from Florida uncovered his greatest discovery on Hammock Beach in St Augustine, a diamond ring with an estimated worth of $40,000.

Joseph Cook's achievement however did not end there, the 37-year-old decided to carry on with the good deed and search for the original owners of the ring by posting it on his social media accounts to try his luck, in case the post reached the owners.

“This is the biggest diamond I ever found on the beach," he said.

A couple of weeks later Cook received calls from an unknown number to him, which he ignored at first, however after remembering that the calls might pertain to the ring he eventually answered: turns out it was a couple from Jacksonville saying that they lost a similar ring.

The ring was handed to the owners in St. Johns County, near the location where it was found, a week later.

“The wife said, ‘oh my god I can’t believe it’, and then she just started crying,” Cook explained.

Joseph described that he did not feel disappointed that the owners claimed this pricy ring, and that he has “returned sixty-thousand dollars of stuff this year, but nothing even close to this before.”

“It felt really good,” he stated.

“Karma’s always good. Every time I return an item, I find something better, so I’m happy I could give it back."