Himalayan pink salt has broken free of specialist shops and is now available in practically every supermarket aisle up and down the country. From coarse crystals to GIY (that's grind it yourself ...

It might look pretty, but a pinch of this stuff will cost you. 100 grams of pink Himalayan salt can cost $5 to $8, up to 20 times more than generic table salt. Ouch. But why is it so expensive?