I knew I wouldn't like the removal of 4 of the half arches, the crown was designed for 8 and so they were thin and delicate. Removing half of them leaves the crown looking empty! Keeping all the arches or using Queen Elizabeth the Queen Mother's crown and replacing the Koh-i-Noor diamond with a Cullinan diamond were always the better options!

Here are some photos showing the Cullinan V brooch and the Cullinan III & IV diamonds.