The crown is set with 2,868 diamonds including 17 sapphires, 11 emeralds and 269 pearls, including four large pear-shaped pearls thought to have belonged to Elizabeth I.
According to UK's The Telegraph, the footage is shown as part of an hour-long BBC One documentary The Coronation which airs in the United Kingdom this weekend and features behind-the-scenes footage of the Queen, capturing her sense of humour and life in the palace. Anxious that the weight of the elaborate jewels at the centrepiece of her crown would injure her neck, she quips: "So there are some disadvantages to crowns, but otherwise they're quite important things".
Speaking for the first time about her coronation 65 years ago, Queen Elizabeth II has revealed how uncomfortable she was riding in her golden carriage to the ceremony, and how wearing the Imperial State Crown risks "breaking your neck".More news: Fortnite Battle Royale Map Getting Revamped Next Week
"Fortunately, my father and I have about the same sort of shaped head", the Queen said, drily.
"Because if you did your neck would break, it would fall off. Otherwise, they're quite important things", she shared.
To this day, Her Majesty remains the soul of discretion.
"The Coronation" airs on The Smithsonian Channel on January 14 at 8 p.m.More news: Rahul likely to replace Dhawan for Centurion Test
"It's only sprung on leather, not very comfortable".
But another royal artefact provided some entertainment: footage in the documentary showed Charles and Anne playing beneath the Queen's royal purple robe as children. Before you slap your knee and chuckle, "Royals, they're just like us", it's a bit more complicated than that.
"It's not meant for traveling in at all".
Then, back to the serious business of ruling.More news: British Prime Minister wants to cut all avoidable plastic within 25 years
During World War II, protecting the Royal Family's Crown Jewels - treasured gems the family's acquired since 1660 - was so top secret even Queen Elizabeth II didn't know exactly where they were stored.