The Mystery Amethyst Tiara of Queen Alexandra ~ Princess of Denmark &amp; Queen of Great Britain, wife of Edward VII (1901-1910.  The tiara is deocrated with 5 hexagonal amethysts, 13 old European-cut diamonds weighing approximately 8.50 carats, 69 old European-cut diamonds weighing approximately 10.00 carats and numerous smaller old-mine and rose-cut diamonds weighing approximately 5.00 carats.  It is mounted in silver and gold and 17 inches. (View 2)