Bible Encyclopedias
Emery

The Nuttall Encyclopedia

A dull, blue-black mineral, allied in composition to the sapphire, but containing a varying quantity of iron oxide; is found in large masses; is exceedingly hard, and largely used in polishing metals, plate-glass, and precious stones.

Bibliography Information
Wood, James, ed. Entry for 'Emery'. The Nuttall Encyclopedia. https://www.studylight.org/​encyclopedias/​eng/​nut/​e/emery.html. Frederick Warne & Co Ltd. London. 1900.