I still find it curious that Queen Alexandra chose to commission a regal circlet based so closely (entirely?) on Queen Victoria's. Not exactly elegant, and not as elegant as the Diamond Diadem.
The band is quite parallel with the QV Regal Circlet, and of the crown of Queen Mary.
Below here, QV Regal Circlet frame and band of the crown of Queen Mary
These are nothing like the bands of Alexandra's own crown nor of the Diamond Diadem. Curious, given aspects of the tale.
Below here, band of Queen Alexandra's crown and the Diamond Diadem