However the 8 curly parts under the orb is either attached to the orb or a loose middle piece sitting on top of where the arches meet. You can see in this photo that the top curly bits are not a part of the arches. You can clearly see that the arches are one part and the curly part on top op the arches are another separate part.
If you look at the crown on Queen Camilla you can see that another "ring" with some diamonds have been added under the 8 curved partes sitting under the orb.
My guess is that this new ring has been designed to somewhat cover for the 4 missing arches of the ring with the 8 curly parts under the orb. If the new ring had not been added you would have 4 curly parts sitting where the 4 missing arched were.
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