Ezekiel 1:7 Their feet were straight feet; and the sole of their feet was like the sole of a calf's foot; and they sparkled like burnished brass. (WEB KJV JPS ASV DBY WBS RSV)
Ezekiel 1:16 The appearance of the wheels and their work was like a beryl: and they four had one likeness; and their appearance and their work was as it were a wheel within a wheel. (See NIV)
Ezekiel 10:9 I looked, and behold, four wheels beside the cherubim, one wheel beside one cherub, and another wheel beside another cherub; and the appearance of the wheels was like a beryl stone. (See NIV)