Neck ring

Neck rings were the frame of the neck section of the Dalek casing, supporting the neck grille which covered the Dalek mutant within. (PROSE: Prisoner of the Daleks)

Variants
Typically, the rings of the neck sections of most Daleks were coloured to match their domes. (TV: The Daleks et al.) Notable exceptions were the black-domed Dalek saucer commanders and the Emperor's Personal Guard, which were coloured according to their wider casings, (TV: The Dalek Invasion of Earth, The Evil of the Daleks, The Parting of the Ways) and the early Supreme Daleks, whose rings were coloured silver like the silver Daleks they commanded. (TV: The Dalek Invasion of Earth)

The white Imperial Daleks created by Davros uniquely had golden neck grilles with white rings. (TV: Revelation of the Daleks, Remembrance of the Daleks)

Matching the casing, the rings of the "bronze" Dalek drones of the Last Great Time War, as well as the Emperor's Personal Guard, and beyond were coloured bronze. (TV: Dalek, The Parting of the Ways)

Matching the casing, the frame of the Ironside Daleks' neck sections were coloured khaki-green. (TV: Victory of the Daleks)

The larger Daleks of the New Dalek Paradigm, Supreme, Eternal, Strategist, Scientist and Drone, were distinct in that their taller grating sections had no rings, merely consisting of four black collars. (TV: Victory of the Daleks) The grating section of the Daleks following total event collapse, along with the rest of their casing, was weathered to stone. (TV: The Big Bang)

The Dalek Time Controller was distinguished by its taller neck sections, which were diagonally circled by revolving rings. Like the whirling debris fields around a gas giant, they appeared solid from a distance, but a closer look saw them burn with the energy of the Time Vortex unfolded in the open gateway within the section of the casing. (PROSE: The Dalek Generation)