Key: Used to describe the prevailing tone of a painting. A predominantly light painting is said to have a high key. In contemporary mural painting, the key is the result of scratching a walls surface to prepare for final layer of plaster - similar to "tooth".

Kinetic art: An art form in which light or balance are used to create a work that moves or appears to move. More complicated kinetic art object are made to move by electric motors.

Karat: The standard measurement of gold. Pure gold is 24 Karats.

Kundan: Kundan refers to fine or highly refined gold foils, and and is sometimes used to describe the champleve style of setting gemstones with such foils rather than claws or rims in recesses that have been hollowed out in gold and surfaced with coloured minerals. This setting technique or style is also known as jadau or jadtar.