Mother-of-pearl is the hard, silvery ... and hence grind more quickly. If the stone be wetted with soap and water it is less liable to be clogged. The pieces are finished on the flat side of ...

Bethlehem is the centre of an industry in mother-of-pearl which supplies beads, rosaries, inlaid work, carvings, and miscellaneous ornaments or souvenirs to all parts of the world. This industry ...