This picture was taken at the French state visit to Great Britain a few months before the outbreak of World War II.
Her Majesty is wearing a ruby-and-diamond parure, some of Queen Victoria's most beautiful pieces of jewellery, originally set with opals. Queen Alexandra later had the opals replaced with fabulous blood-red Burmese rubies.
According to Leslie Field ("The Queens Jewels" p. 138)four brooches form a part of the parure and: "Two of Queen Victoria's opal brooches that had been reset with rubies are often pinned at her Garter Riband". I think that would account for two of the brooches in your picture, although Her Majesty clearly is wearing another sash here . To fasten this sash even further at the shoulder, her Majesty is also wearing Queen Victoria's diamond double bar brooch.
--Previous Message-- : Trying to get info on the brooches the Queen : Mother is wearing in these pictures?? : PJ : : This is part of photo taking on EII's 18th : birthday. : : : This photo was taking in Dec 1947 at Slough : Social Center. : : : This photo was taking in March 1939 while at : the Royal Opera House : : : While attending service at Hillington Parish : Church near Sandringham in 1986 : : This was taking at Prince Charles : christening from (The Queen Mother and her : family by Trevor Hall) : :