John Who found a pearl inside an oyster. (COMIC: Guests of King Neptune [+]Roger Noel Cook, TV Comic Holiday Special stories (1966).)
A pearl was a type of gem that grew inside an oyster.
Oysters grew pearls by secreting a substance to cover up something which got stuck between its mantle and its shell that caused it pain. (PROSE: The Feast of the Drowned [+]Stephen Cole, BBC New Series Adventures (BBC Books, 2006).)
John found a pearl in the oyster he was eating at King Neptune's castle, while Gillian was given a pearl necklace. (COMIC: Guests of King Neptune [+]Roger Noel Cook, TV Comic Holiday Special stories (1966).)
A Silurian of advanced age would festoon the third eye with pearls as a form of decoration. (PROSE: Blood Heat [+]Jim Mortimore, Virgin New Adventures (Virgin Books, 1993).)
A feminine version of the Doctor with a bald head and dark skin wielding a flaming sword wore pearl earrings. (PROSE: Rose [+]Russell T Davies, adapted from Rose (Russell T Davies), Target novelisations (Target Books, 2018).)
The Toymaker had pearls on his Chinese Mandarin outfit. (PROSE: The Celestial Toymaker [+]Gerry Davis and Alison Bingeman, adapted from The Celestial Toymaker (Brian Hayles), Target novelisations (Target Books, 1986).)
Fitz Kreiner described the planet Yquatine as a "blue-green pearl". (PROSE: The Fall of Yquatine [+]Nick Walters, BBC Eighth Doctor Adventures (BBC Books, 2000).)
Lady Babbington's pearls were stolen by Ada Mullins, a jewel thief better known as "the Unicorn", in December 1926. (TV: The Unicorn and the Wasp [+]Gareth Roberts, Doctor Who series 4 (BBC One, 2008).)
