A true king crown has to be made from gold, it has to represent the world, power and religion, it has to feature precious stones, gems and jewels to represent the influence and wealth of its wearer and it has to be red, blue or purple, which are royal colors; the Crown of Scotland has all that, which makes it the perfect candidate.
The royal crown is still a powerful symbol today, even though real empires or monarchies no longer exist; nevertheless, those countries with constitutional monarchy, who still recognize their royal families, have kept their traditions because they are part of a richer culture which mustn’t be forgotten.
Lady Diana’s favorite princess crown was the Spencer tiara. Despite the fact that this was not a royal piece, it was so often worn by the princess that it was ultimately associated with her image. Two of the most famous tiaras belong to Queen Elisabeth. Both were a gift that she received when from her grandmother back when she was a princess
The importance of the crown jewels is not given by the value of the precious gems but by the spiritual meaning of the coronation objects. Most objects are rather modern since the old ones were destroyed during the 16th century as part of the abolition of monarchy. The only remaining item from the original collection is the Anointing Spoon.