(in English "a little coal," "a bright red gem"): eqedach, boreqeth, the former in Isaiah 54:12 from qadach "to burn," the latter from baraq "to flash." A brightly flashing stone. A smaragd (Septuagint) or corundum, of green glass color, transparent, and doubly refractive; the emerald (Exodus 28:17); third stone in the first row m the high priest's breast-plate (Ezekiel 28:13).