Harker Herbal Celtic and New Zealand Sea Salt has 84 known mineral and trace elements. This nutrient-rich blend helps to increase food-nutrient absorption and provides exceptional flavour to foods. It is rich in organic plankton and has a grey tone due to the magnesium chloride. Certified organic - the kelp comes from the South Island and the NZ sea salt is sourced from Kaikoura. The Celtic sea salt comes from Normandy and is of the highest grade with a French certification. Gluten Free