Many thanks for the link The Royal Watcher. Some where on one of her other pages (but not on the link you provided) Ursula has acknowledged that the insight about the connection between the sapphire necklace elements and Queen Alexandra's tiara (as worn to the Fife wedding) came from my research.

For my research (which was only accepted after a long time by members of the RJWMB) see http://members2.boardhost.com/royal-jewels/msg/archive/1454571425.html

Although I knew that the tiaras worn by Queen Alexandra and her grand-daughter, the Countess of Southesk, were not the same, it was re-reading Ursula's information -- that the elements of the necklace were detachable -- which provided me with the insight - so again - thank you Ursula and Laura!