A necklace unseen since the sinking of the RMS Titanic has been discovered in the ship’s wreckage - and cutting edge technology is being used to track down the owner.

The largest underwater 3D capture project has created the first full-sized digital scan of the vessel, which sank in 1912.

New discoveries have been uncovered thanks to the scan, including a necklace made from the tooth of a Megalodon, a pre-historic shark, with gold jewellery built into it.

Daily Echo: The Megalodon tooth can be seen in the circle The Megalodon tooth can be seen in the circle (Image: Magellan)

Deep-sea mapping company Magellan Ltd conducted the ground-breaking work in the summer of 2022.

Speaking to ITV Channel, Richard Parkinson, CEO of Magellan, said: “What is not widely understood is that the Titanic is in two parts and there's a three-square-mile debris field between the bow and the stern.

"The team mapped the field in such detail that we could pick out those details."

This discovery is made even more poignant by the fact a necklace plays an integral part in the 1997 film Titanic, which is based on true events.

Although the artefact is not the same as the famous ‘Heart of the Ocean’ necklace created for the film, it shines a light on those onboard the luxury liner.

Magellan is currently using artificial intelligence to contact the family members of the 2,200 passengers onboard the Titanic to seek the owner of the necklace.

READ MORE: Titanic rediscovered as first full-sized scans reveal entire wreck

The team will analyse footage of passengers boarding the ship alongside facial recognition, while looking at their clothes.

The impressive expedition last summer deployed two submersibles which spent many hours 12,500 feet below the surface mapping every millimetre of the wreck.

The full three-mile debris field was also mapped.

Magellan was joined by Atlantic Productions who are making a documentary about the project.