Jewellery

Jewellery were small items made of metals and precious stones, worn as adornment or fashion accessories.

One form of jewellery was a necklace, a form of jewellery worn around the neck. On Earth, Cessair wore the Great Seal of Diplos she had stolen as a necklace. (TV: The Stones of Blood)

Another form of jewellery was a ring, worn around fingers. The Ring of Rassilon was worn by Rassilon, who slept eternally in the Tomb of Rassilon while his mind lived on in the Matrix. When it was worn by someone else, it granted the wearer immortality and imprisoned the wearer in the stone of Rassilon's embossing, watching over Rassilon forever. (TV: The Five Doctors)

While visiting the Quadrant in 1987, Chris Cwej got an earring in his right ear. At the time in England, this was an indication that the wearer was gay, but Chris was initially unaware of the significance. (PROSE: Damaged Goods)

Alternate timelines
In an alternate timeline where the Common Men rose in place of the Beatles, the Fifth Doctor observed in shock as Elizabeth II danced the twist and threw her jewellery at them during one of their performances. (AUDIO:  Fanfare for the Common Men)