This is the 14527th most frequent Turkish word.
parlaklık
Brightness; shine; luster.
Here, 'parlaklık' refers to the visual attribute of the stone that makes it shine.
Bu taşın parlaklığı göz kamaştırıcı.
The brightness of this stone is dazzling.
In this sentence, 'parlaklık' is used to denote the level of luminous intensity the computer screen emits.
Yeni bilgisayar ekranının parlaklığını ayarladım.
I adjusted the brightness of the new computer screen.
Here, 'parlaklık' metaphorically represents the cleverness or ingenuity of the idea.