I regret that I'm unable to post a photo. If you can see a photo of queen watching the king's horse at Ascot on Tuesday - - Is that one of the two-row diamond brooches on the underside of her hat brim? I don't recall ever seeing a brooch worn this way.

So sorry I have no picture.

Indeed, it looks like Queen Victoria's 10-diamond bar brooch. Quite original - but I would not blame the Queen for that...

As seen on this picture, Queen Camilla also wore the Cullinan V diamond brooch.

And besides jewellery, the floral embroideries on her dress shoulders are also lovely.

Thank you, Arthur - - What an unusual way to wear a brooch!