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Ring (disambiguation)for other, similarly-named pages.
The Doctor wore several rings over his lifetime. The First Doctor wore a signet ring throughout his life, (TV: An Unearthly Child - The Tenth Planet) only for the Second Doctor to discard it upon discovering that it was too large for him. (TV: The Power of the Daleks) The Seventh Doctor later recovered this ring (COMIC: The Chameleon Factor) and began wearing it once again. (COMIC: The Good Soldier, PROSE: Tragedy Day et al)
The Third Doctor adopted a pinky ring which he wore on his left hand, (TV: The Ambassadors of Death, et al) while the Twelfth Doctor wore a gold ring with a green gemstone on his left hand ring finger. (TV: Deep Breath, et al) It was a wedding ring from his marriage to River Song and the ring fell to the TARDIS floor when he regenerated within the TARDIS control room, because his successor's hands were smaller. (TV: Twice Upon a Time, PROSE: Twice Upon a Time)
The Master wore numerous different rings throughout his life. Whilst posing as Harold Saxon, the Master wore two rings: one a simple gold band on his left hand ring finger, and another ring, featuring an ornate design resembling the logo of Lazarus Laboratories. (TV: The Sound of Drums/Last of the Time Lords) Missy later wore a variety of rings, which she wore on either middle finger. (TV: Dark Water/Death in Heaven, The Magician's Apprentice/The Witch's Familiar)
Rings could be used as bio-dampers. The Tenth Doctor gave Donna Noble a bio-damper in the form of a ring so that she would be hidden from the Racnoss. (TV: The Runaway Bride) Gavin wore a bio-damper ring he inherited from his father which hid his alien origins. (TV: The Empty Planet)