Himalayan Salt Lamps and Burners Not only aesthetically pleasing to the eye, but they are also crammed with a goodness! Formed from Pink Halite, their colouring is derived from a combination of 84 naturally occurring minerals, incl. calcium, potassium, magnesium and iron - the darker the colour, the more iron is present in the mined chunk. Salt lamps clean the air, acting as a mini-ioniser, so the longer the salt lamp is kept on, the better job it can do of clearing out the impurities!