Canadian Sapphires Match for a Queen Now Unearthed

Sapphire Tough

New Analysis Might Make It Simpler to Discover Excessive-high quality Canadian Sapphires
New analysis from UBC mineralogists might make it simpler to seek out excessive-high quality Canadian sapphires, the identical glowing blue gems that adorn Queen Elizabeth II’s Sapphire Jubilee Snowflake Brooch.

The so-referred to as Beluga sapphires have been found close to Kimmirut, Baffin Island, Nunavut by brothers Nowdluk and Seemeega Aqpik in 2002. The situation is Canada’s solely recognized deposit of sapphires. The gems type the idea of the ceremonial brooch given to the Queen final week by Canada’s Governor Common David Johnston.

“These occurrences are the primary reported sapphires hosted in this kind of marble-associated deposit,” says Philippe Belley, a graduate scholar on the College of British Columbia. “We have found that it takes a reasonably particular sequence of strain and temperature occasions to create these gems. It is primarily a recipe.”

Belley, UBC mineralogist Lee Groat, and colleagues, define the findings within the July problem of the Canadian Mineralogist, the place they found the distinctive recipe of strain and temperature occasions from Earth’s historical past that have been required to type sapphires on this space.

The researchers in contrast this info to regional knowledge to pinpoint probably the most promising areas for sapphire exploration. These areas are anticipated to happen close to a fault that separates the Lake Harbour Group and Narsajuaq terranes. A terrane is a fault-bounded space or area with a particular stratigraphy, construction, and geological historical past.

“This analysis has enabled us to determine the areas of biggest potential for Kimmirut-sort sapphire deposits in southern Baffin Island, which can facilitate gemstone exploration on this a part of the Arctic,” says Groat, a UBC professional on gem deposits. “However it’s additionally a deposit mannequin that may be utilized to exploration worldwide.”

Sapphires are often reduce and polished into gems for jewellery. The Beluga sapphires are sometimes a hanging blue, however are typically yellow or colourless. The Queen’s Sapphire Jubilee Snowflake Brooch consists of forty eight Beluga sapphires, together with four hundred diamonds from northern Canada, all set in Canadian white gold. Sapphires vary in worth from US$ 200 to $ 2,000 per carat.

The above story is predicated on Materials offered by University of British Columbia.

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