'Sardius' in the Bible

and he that sat was to look upon like a jasper stone and a sardius: and there was a rainbow round about the throne, like an emerald to look upon.

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