The rock salt is estimated to have formed hundreds of millions of years ago when ancient bodies of water evaporated; it is mostly mined from the Khewra Salt Mine in the foothills of the Salt Range in Jhelum, in the Pakistani province of Punjab. Gangji Himalayan Rock salt Products consist of 80 plus minerals which makes them healthier than the common table salt.

Analysis of a range of Khewra salt samples showed them to be between 96% and 99% sodium chloride, with varying amounts of trace minerals such as calcium, iron, zinc, chromium, magnesium, and sulfate, all at safe levels below 1%. Some salt crystals from this region have an off-white to transparent color, while the trace minerals in some veins of salt give it a pink, reddish, or beet-red color.