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

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Quesnel hockey player takes part in historic outdoor game

Destiny Bautista played in the first-ever female midget AAA league outdoor hockey game on Jan. 19

MISSING TEEN: Williams Lake RCMP ask public’s help in finding Angel Emile

Emile was last seen on Windmill Crescent in Williams Lake Jan. 16

All buses cancelled in Quesnel School District Thursday, Jan. 23

Most rural bus routes are deemed unsafe for school bus travel this morning

Cariboo air attack officer reports from Australia

“We are flying a lot, bombing fires anywhere from four to nine hours a day”

VIDEO: Rare ‘ice circle’ spotted on Kamloops river

An ice circle or ice pan, has formed in the chilly waters just east of the Yellowhead Bridge

Uber, Lyft approved for ride-hailing in Lower Mainland

Kater Technologies Inc.’s application was rejected

B.C. man rescued after getting trapped headfirst in well as water level rose

The rescue involved crews from Oak Bay and Saanich

Investigators in wildfire-torn Australia head to site of B.C. airtanker crash

The B.C. government sends condolences to Port Alberni-owned Coulson Aviation

RCMP investigating sexual allegation against Lower Mainland police officer

Delta officer suspended while the alleged off-duty incident involving a co-worker is investigated

Former Mountie, sports coach convicted of sex abuse in B.C. granted day parole

Alan Davidson was sentenced to almost six years for abusing seven boys in the late 1970s and early 1990s

VIDEO: Person in wheelchair narrowly avoids collision with car in Kelowna

There were no injuries in the scary looking near-accident last week in Rutland

Here’s what Canada is doing to stop the coronavirus from getting in

Health officials are monitoring multiple possible cases in Canada

B.C. still struggling to control non-resident medical care fraud

Unpaid bills, out-of-province claimants a costly legacy of MSP

Most Read