From what I understand is that it belonged wholly to Queen Mary and not to King George V and as such she can give it to whom ever she wants. It's part of the Queen personal property and she can give to whomever she wants. PJ --Previous Message-- : Thanks for the link, PJ Kiser! : : The ownership of this tiara is rather : mysterious. As a jewel transmitted from : Queen (Mary) to Queen (Elizabeth II), it : should now be a part of the Royal Collection : (which is the copyright mentioned by : Geoffrey Munn in his book Tiaras, A History : of Splendour , page 134), and not a private : property of the Queen. : : But when she presented the Lovers Knot tiara : to Diana as a wedding gift in 1981, the : Queen could not foresee that the Royal : Family would be plagued, a decade later, by : so many divorces. A royal marriage was : supposed to last for life: so it made sense, : at that time, that gifts were fully given, : and not only "loaned", as it is : now the case. Therefore, it would be a : logical deduction that William (or Harry) : inherited the tiara at their mother's death. : But that would not be coherent with the : tiara being part of the Royal Collection. : : Another possibility could be that the Lovers : Knot tiara was a "gift for life" : to Diana - a kind of intermediary position : between a gift in full property and a mere : loan. That would imply that the tiara : reverted back to the Queen after Diana's : death (or even after her divorce). That : would also be coherent with an information : posted by our well-informed (and : much-missed) poster Boffer in 2011 : indicating that " most of the historic : royal jewels that Princess Margaret was : gifted by her mother and sister during her : lifetime were only gifts-for-life and thus : reverted back to the Queen upon her death : ". : : We can notice that Hugh Roberts, in The : Queen's Diamonds (page 182), remains silent : about the ownership issue: " the tiara : was inherited by The Queen from her : grandmother in 1953 and was worn by Diana, : Princess of Wales, following her marriage in : 1981 ". But he does not disclose if the : tiara had been given or loaned, and if the : tiara went to the Queen or to Prince William : (or to Prince Harry) after Diana's death. : : Note that the words used in the documentary : on Youtube should not be taken for a granted : and sure truth. Actually, there seems to be : some errors in this documentary. For : example, a few minutes after the passage : about the Lovers Knot tiara, the authors of : the documentary discuss Queen Alexandra's : wedding gift parure, and erroneously mention : that the brooch of the parure had remained : with the Queen-Mother (whereas we know that : it was bequeathed by Queen Mary to Queen : Elizabeth II). : : Anyway, I hope we will not have to wait for : decades before we can see this beautiful : Lovers Knot tiara again! It is both delicate : and majestic, and I am sure it would look : great on the Duchess of Cambridge! : : : : : : : --Previous Message-- : Thanks for the link to this documentary ! : : --Previous Message-- : I found this documentary while looking for : something else. Its on the British Royal : Jewelry, talks about the Queen, Queen Mary : and Princess Diana. The True Lovers Knot : Tiara is mention on 31:15 as one of two : pieces of Royal jewelry owned outright by : Diana and is the hands of her sons as her : legacy. I don't know how true this is and I : know this was talked about before. This is : my two cents on the subject. : PJ : British Jewels Doc : : : : : :