The makers were Hillberg & Berk who made the tourmaline brooch http://www.cleveland19.com/story/35923217/hillberg-berk-creates-canadian-sapphire-jubilee-brooch-for-her-majesty-queen-elizabeth-ii
I'm intrigued by the variety of colours in the sapphires which apparently are natural and not the result of heat treatment. I'm looking forward to seeing this brooch worn. It will really sparkle!
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