There are different kinds of edible salt: unrefined salt (for example sea salt), refined salt (table salt), and iodized salt. It is a crystalline solid that has the color white, pale pink, or light gray. It is usually taken from sea water or rock deposits. Natural sea salt has little parts and pieces of other minerals besides sodium chloride. Rock salts that can be eaten are sometimes a little grayish in color because of these other minerals.