Enjoying Zamzam Water in Rabigh

I have recently read, and loved, Barbara Nadel's 'Noble Killing'. When Ayşe Farsakoğlu and Hikmet Yildiz visit the market in Fatih they come across a stall, next to the cherry cart, selling  various religious artefacts including “…transparent lockets containing drops of water from the sacred Zamzam well”.   

Zamzam water, from the Well of Zamzam in Mecca, is heavily salinated and is said to possess miraculous properties. It tastes clean and pure, quenches thirst, satisfies hunger and cures illness. It is sold only in Saudi Arabia.