Emerald (colour)

Emerald was a shade of green called after a certain gemstone.

Ace wore an emerald t-shirt under a black cardigan when she and the Seventh Doctor worked with UNIT to stop Morgana and the Destroyer. (TV: Battlefield)

Bill Potts wore an emerald velvet coat during a visit to the 1814 frost fair. (TV: Thin Ice)

The Eighth Doctor wore a cravat of emerald dupioni when he, Charley Pollard, and C'rizz confront the Kro'ka. (AUDIO: Caerdroia)

The Third Doctor wore a blazer of emerald velvet when he and Sarah Jane Smith helped to save Peladon from Azaxyr and Eckersley. (TV: The Monster of Peladon)

The Master wore an emerald cravat when posing as 'the other Doctor'. (AUDIO: Dominion)