Specifically, I would use Hawaiian Red/Pink salt.

It contains all the "livingness" from today's ocean, with minimum pollutants.

If you want a more Ayurvedic approach, mix several different types of salts in varrying proportions.

For example, mix the following proportion:
72% Hawaiian Red/Pink salt
25% Himalayan Crystal Salt
1% Celtic Sea Salt
1% Black Salt
1% Real Salt

With the above mixture of salts, you get the base energy of today's energy matrix from the Hawaiian, the pristine energy of the Himalayan, and a homeopathic amounts of Celtic, Black and Real salts.

Of course, you can choose the proportions and the types you desire.