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

West Shore residents report finding anti-SOGI 123 flyers in mailboxes

SD62 trustee Ravi Parmar says the flyers are ‘garbage’

Saanich woman runs marathons to make dreams come true

Hempler gutted her way through 122 kms with minimal breaks, to support Help Fill a Dream Foundation

Tsartlip canoe team pulls for international glory in Australia

Geronimo Canoe Club paddles to Victoria to kick-start fundraising

Colwood resident cycles for 12.5 hours to raise money for hospice

Graham Hales will participate in the Cycle of Life tour in July

What’s bugging you? Exterminator talks pests in Victoria

Dealing with pests in the home this summer and beyond

Victoria Weekender: What’s happening this weekend, June 15-16

Car Free YYJ, a barber battle and an Outdoor Discovery Day

Homalco tour gives glimpse into area’s ‘People, Land, Water’

First Nation business mixes cultural components with wildlife excursions

B.C. university to offer mentorship program for former youth in care

Students using the provincial tuition waiver program will soon be able to form a community at KPU

Cyclists competing in one of the toughest bike races on the planet pass through Fernie

Divide riders looking strong as they finish first leg of 4160 km race

You might not know these B.C. records are public

Hired a lawyer to file a civil claim? Those are published online

B.C. bus driver loses case to get job back after texting while driving full bus

An arbitator ruled that Tim Wesman’s phone usage was a “a reckless disregard for public safety”

Revamped B.C. Lions set to battle veteran Winnipeg Blue Bombers

The Lions’ first test of the season will be a big one

No business case for Trans Mountain expansion, says former environment minister

Cabinet is expected to announce its decision on the expansion of the Alberta-to-B.C. pipeline by Tuesday

LETTER: British Columbia’s forest industry crisis being made worse

Andrew Wilkinson warns of regulatory overload by John Horgan’s NDP

Most Read