A precious stone.
Then I lifted up mine eyes, and looked, and behold a certain man clothed in linen, whose loins were girded with fine gold of Uphaz: his body also was like the BERYL, and his face as the appearance of lightning, and his eyes as lamps of fire, and his arms and his feet like in colour to polished brass, and the voice of his words like the voice of a multitude. ( Daniel 10:5-6 )
Bibliography Information"Entry for 'Beryl'". A King James Dictionary.