Somewhere in the Carmel hills of northern Israel, diamond exploration company Shefa Yamim hopes to uncover the exact spot where faith meets science. Inspired by the words of a revered rabbi who prophesized that precious stones were divinely buried in the area, the firm has been mining for about a decade along the steep hills and lush valleys that surround the city of Haifa. Now, Shefa Yamim, the first and only diamond explorer in Israel, says it has found strong signs that significant diamond deposits are indeed hidden in the Holy Land, surprising many who had dismissed the mission as...