The Royal Family is known for its unmatched jewelry collection , which includes a plethora of invaluable engagement rings . But according to one former royal employee , one royal bride actually didn't like her engagement ring very much. In his book, A Royal Duty , Princess Diana's former butler , Paul Burrell , recalled the moments leading up to the royal's engagement to King Charles . According to Burrell, a famous jeweler "was spotted with a small attaché case" at the palace, causing speculation regarding an imminent proposal. Per the former butler, "David Thomas, who was responsible for the upkeep of the Crown Jewels in the Jewel House at the Tower of London , had in fact brought...rings, with strict instructions not to include rubies or emeralds ." Burrell also shared that Thomas's attendance seemed "far too cloak-and-dagger" for anything other than a high-profile engagement. According to Burrell's recollection, "A selection of diamonds and sapphires was set on a tray for—oddly—The Queen's perusal.…