I have just read that on May 10th, 1927 Queen Elizabeth as Duchess of York wore an brooch "a wonderful uncut opal surrounded by diamond set in the V shape neckline in Australia. (From the argus)
On an aother article : We read that the Duchess of York appeared the other day wearing aFix this text maenlticent opal, ringed with diamonds (from the newspaper the Examiner)
I also read from the West Australian "ROYAL FONDNESS FOR OPALS." Gift to Duchess of York. LONDON. Fob. 21. -"In the course of their visit to the Australian sectiou of the British Industries Fair, Queen Mary and the Duchess of York were attracted by display of opals, ot which the Duchess is particularly fond. She spent some time examining Australian gems aud received a present of Queensland opals."