Cross reference
Revelation 21:20
20 the fifth, sardonyx; the sixth, sardius; the seventh, chrysolite; the eighth, beryl; the ninth, topaz; the tenth, chrysoprase; the eleventh, jacinth; the twelfth, amethyst.
Revelation 4:3
3 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.