'Sixth' in the Bible

I looked when He broke the sixth seal, and there was a great earthquake; and the sun became black as sackcloth made of hair, and the whole moon became like blood;

Then the sixth angel sounded, and I heard a voice from the four horns of the golden altar which is before God,

one saying to the sixth angel who had the trumpet, “Release the four angels who are bound at the great river Euphrates.”

The sixth angel poured out his bowl on the great river, the Euphrates; and its water was dried up, so that the way would be prepared for the kings from the east.

the fifth, sardonyx; the sixth, sardius; the seventh, chrysolite; the eighth, beryl; the ninth, topaz; the tenth, chrysoprase; the eleventh, jacinth; the twelfth, amethyst.