Rivisalt Persian Blue Refill

Rivsalt BLUE comes with three pieces of exquisite Persian blue salt rock. Persian blue rock salt is one of the rarest and most exclusive salts and is extracted from salt mines in northern Iran. The intriguing blue colour occurs during the forming of the salt’s crystalline structure, as intense pressure is exerted on the salt deposits. The individual crystals fracture the light in an unusual way creating an optical illusion that makes the salt appear more or less shimmering blue.