White Himalayan crystal mineral salt has a low iron content in the crystal. White Himalayan Mineral Salt is not as common, so generally may be priced higher. As a Salt Lamp, white Himalayan Salt has the same healing properties, when heated it releases negative ions which purifies the surrounding air.
Usually white Himalayan salt is found in outer areas of a salt mine. It is very low in iron which is why it is white in color. This type of Himalayan salt isn’t as common as the pink Himalayan salt, but just as effective. If you are looking for a white Himalayan salt lamp, you will notice it is more expensive than pink Himalayan salt. The main reason for that is because it is much more difficult to find and extract white Himalayan salt.

With this being noted, when white Himalayan salt is heated, it will release some negative ions that purify the air. This is similar to what pink Himalayan salt does. They are not so different in that aspect.