No they are not! From what I have researched,you have to consider where they are harvested, how they are harvested, and how they are processed.
Conventional (white) table salt is extremely different from other healthier choices like Celtic sea salt and Himalaya pink salt. It is stripped of most minerals and trace elements during the extensive refining process. They also add anti-caking agents which make up about 3% of the salt. The other 97% of what is left over after the processing is sodium and chloride. THIS is the type of salt that we need to AVOID in our diets!
Most Celtic salt (or gray salt) comes from the northwest coast of France. It is gray in color because it absorbs minerals from clay that lines the salt ponds. Companies that harvest it, still use the traditional Celtic methods where they collect it by hand with wooden tools. Celtic sea salt contains somewhere between 80-90 elements found in sea water. Among the minerals and trace elements included in Celtic salt are: calcium, iron, magnesium, manganese, potassium, zinc, and iodine.
Himalaya pink salt is mined from the earth. It is harvested from the foothills of the Himalayas. They also harvest this salt by hand using traditional methods. Himalaya salt is rich in many minerals such as calcium, potassium, and iron, and it is the high iron content that gives this salt its pink color.
Both Celtic salt and Himalaya salt are alkalizing for the body due to all the minerals in them, and they greatly enhance the flavor of many dishes! So enjoy using these salts in your diet in moderation instead of conventional salts.