Beauty

A rebel Dalek, through an accident in its manufacture, had human-like qualities, including the ability to appreciate beauty. It tried to teach other Daleks that beauty had to be preserved and was a strength. The Dalek Emperor reminded them beauty was not eternal or a strength and had the 'diseased' Dalek exterminated, decreeing that beauty was for human beings and human beings were to be destroyed. (COMIC: Shadow of Humanity)

Another Dalek, left adrift after a battle, witnessed the birth of a star. Claiming to have "[seen] beauty", the Dalek, later named "Rusty", turned on its own kind out of a desire to protect beautiful things. (TV: Into the Dalek)

The Dalek Time Controller once told that his kind didn't have a concept of beauty, (AUDIO: Master of the Daleks) a sentiment that the Mechonoids agreed with. (WC: Planet of the Mechonoids) The Emperor of the Restoration however declared that the Dalek Prime Strategist's deception of the Mechnoids and the Entity as "beautiful". (WC: Day of Reckoning)

The Prime Minister of the Daleks revealed to the Eleventh Doctor that the Daleks had a concept of beauty, as they admired the "divine hatred" of the residents of Dalek Asylum. (TV: Asylum of the Daleks)

Upon his deathbed, Davros regarded the reborn Skaro as beautiful. (TV: The Witch's Familiar)