- Joe Templeton, 21, was playing football with friends when his ring slipped off his finger into the lake at Colwick Country Park in Nottingham
- Terrified to tell his family about the loss, he enlisted the help of scuba diving group Underwater Hunters who search for lost objects lost in the water
- Divers Warren Palmer, 45, from Long Eaton, Notts, and his stepson Anthony Hanstock, 25, recovered the ring on Sunday
A team of underwater treasure hunters have reunited a student with a priceless family heirloom after it was dropped in a lake.
Joe Templeton, 21, was playing football with friends at Colwick Country Park in Nottingham when his ring slipped off his finger and into the water.
The golden band once belonged to his late grandfather and had been in the family for decades.
It had first been given to his grandfather when he was 21-years-old, and when the precious heirloom was passed down to Mr Templeton, his grandmother told him to always look after it.
Devastated Mr Templeton spent hours searching for the ring himself after he lost it last Saturday.
He was almost ready to give up before he searched online and came across a team of specialist metal detectorists called Underwater Hunters.
Mr Templeton called them and they spent the next day scouring the bottom of the 63-acre lake with their underwater metal detectors and cameras.
After several hours, and many false finds, the team finally found Mr Templeton's ring embedded in the thick mud.
The moment Mr Templeton was reunited with his late grandfather's ring was captured on video which was taken by the dive team.
The Nottingham University student said: 'I'm so happy, it's saved me a lot of arguments with my family.'
Diver Warren Palmer, 45, said: 'Joe was over the moon, he couldn't believe it. He was very emotional.
'We were nearly at the stage of giving up, thinking he had trod it in or it is just gone. We had one more go near the end of the day.
'He was just ecstatic because he was scared to tell his mom and dad. He is a lovely guy, a very nice kid so I'm glad we could help him find it.
'You're not talking just what's on the surface, you're talking what is in the silts.
'I said to Joe 'you're very lucky you didn't cut your feet in the lake' because there's that many bottles, keyrings, sharp little objects.
'There's lots of rubble. You've got that issue and with a metal detector, it will pick up the smallest tiniest thing.
'When we're in the water, you have to sift through that bit of water very carefully.
'You have to go through it in your fingers.'
While underwater looking for Joe's ring, the divers found a whole host of other treasures.
'We found sunglasses, phones, all sorts of things,' said Mr Palmer.
'It does take a while to sift through the lake if you're looking for something that small.'
Mr Palmer runs the underwater treasure hunting company with his step-son Anthony Hanstock, 25.
Since starting up their business last year the pair have found tons of weird and wacky items in lakes and rivers across the UK.
Mr Palmer added: 'We've found GoPros cameras, sunglasses, a big red chug boat that's 12 years old in an old American Adventure theme park lake.
'People are still wanting to buy that as it's memorabilia. You name it, it's in those rivers and lakes.
'We found a 25-inch double-ended dildo once.
'Under there is a lot of wildlife and things, but then you see what humans are doing to it.
'On top of the water it looks so nice but underneath it's a different story.'