Canadian Arctic a prime spot for ‘ridiculously rare’ blue gemstones

Experts say cobalt-blue spinel is prized by jewellers and collectors

Baffin Island holds some of its treasures in plain sight with rocks that produce rare gems sitting exposed to the elements, scientists say.

A new study from the University of British Columbia shows the area is home to a mineral that is prized by jewellers and collectors.

READ MORE: Battle over insurance payout for diamond-encrusted eagle statue allegedly stolen in B.C.

Study co-author Philippe Belley said in an interview that cobalt-blue spinel, “which is a ridiculously rare gemstone” gets a lot of interest from gemologists and jewellers but there’s not enough supply.

The most significant source of the gems is Vietnam, and even then production is limited, said Belley, who’s a PhD graduate within the department of earth, ocean and atmospheric sciences.

He and report co-author UBC mineralogist Lee Groat conducted the first scientific study of the cobalt-blue spinel in Canada.

Baffin Island is “really unique” because it has all the “right ingredients” needed to produce coloured gemstones but the area is “virtually” unexplored, Belley said.

“The rock is extremely well exposed so not only is it easy to see if you have a gem occurrence by just walking on the surface and doing geological mapping, but its also suitable for remote detection methods using drones and satellites to collect data on the rocks.”

Using remote detection can’t be done in most other gem-producing areas because of plant cover or challenging terrain, Belley said.

The researchers analysed 14 occurrences of spinel on Baffin Island, including two of cobalt-blue spinel, to better understand how it forms.

“It’s finding the right chemical components in the right concentration,” he said. “We found that most gem occurrences on Baffin Island were formed from the transformation of a mixture of mud and magnesium-rich limestone under high temperature and pressure.”

They found it was formed 1.8 billion years ago at temperatures of about 800 C, but cobalt was only present in high-enough concentrations to produce gem-quality stones in small, localized areas.

Baffin Island spinel contains up to 500 parts-per-million of cobalt, giving it a vivid blue colour comparable to the best sources worldwide, Belley said in the news release.

Spinel also comes in red, pink and violet, Belley said.

Other gems found on Baffin Island include beluga sapphires, used in the Queen’s sapphire jubilee brooch, and lapis lazuli, a rock used as a gemstone by the Egyptians.

Mining for the gems on Baffin Island wouldn’t necessarily leave a large geographical footprint, he said.

“Most gemstones are either mined from a relatively small mine and a lot of them a mined by one or a few people or families around the world, which is called artisanal mining.”

Hina Alam, The Canadian Press

Like us on Facebook and follow us on Twitter

Just Posted

IHIT hunting in Edmonton for clues to 2017 Surrey homicide

Tanner Krupa, 19 was found dead in an alley in August 2017, in the 6900-block of 127A Street

Update: Surrey Mounties found missing man

Kuldip Sandhu, 41, had been reported missing

Surrey youth ‘REWIRE’ in play-creating project that involves a lunar eclipse and video games

‘It was such a fun process to create a play from scratch,’ says Guildford Park Secondary student

New townhouse, sunny trip for Surrey lottery winner

Surrey resident Victor Raghwan has won the Daily Grand lottery

Low-flying aircraft to spray for gypsy moths in one area of Surrey starting in May

Near Highway 1, ‘ground sprays were not effective’ in 2017 and 2018, government says

WATCH: White Rock Elementary students host snail race

Father creates time-lapse video of race

Landlord of alleged Okanagan shooter recounts deadly day

Tony Friesen was working in one of the units of his Penticton building when he heard shots

B.C. RCMP arrest foreign national in connection to airport thefts

A woman, 60, is being held in police custody as Richmond RCMP investigate

Police pursue pesky porker on Vancouver Island

‘This was allegedly not the pig’s first escape’

Rare ‘Snow Tower’ tree blooming in Vancouver city park

A plant rarely grown in Canada is now flowering at the Bloedel Conservatory in Queen Elizabeth Park

Westjet tries again to dismiss proposed class-action lawsuit alleging discrimination

Former flight attendant claims airline broke contractual promise to create harassment-free workplace

Man airlifted to hospital after apparent hunting incident in East Kootenay

The man was in stable condition when he was flown out of Fairmont Hot Springs to a Calgary hospital

Police probe eight fires set at B.C. elementary school

Nanaimo RCMP say fires appear to have been set intentionally

Undercover cops don’t need warrant to email, text suspected child lurers: court

High court decision came Thursday in the case of Sean Patrick Mills of Newfoundland

Most Read