Well PJ, I am not surprised. Queen Mary seems to be a never-ending font of jewels and her motto seemed to be - If you've got it....flaunt it. Therefore, it makes sense that she would use a "real" brooch rather than some haberdashery trinket.
Sorry I cannot help with this particular brooch, but if I see it in my travels, I will let you know.
Cheers! Bryce
--Previous Message-- : This photo shows the same hat different : brooch. And the brooch in question in this : photo was sold at auction. : PJ : : : --Previous Message-- : : I found this photo on the site listed under : Queen Mary's photo. It's the circled brooch : I'm interested in on her hat. Queen Mary : photo : You'll need to go just over half way down : the site to Empress Marie Feodorovna's : Sapphire Brooch. It's the third photo under : this heading. Any help will be appreciated. : PJ : : : :