Regarding the appearance of the wheels and their construction: they gleamed like chrysolite (beryl, olivine); and the four were made alike. Their appearance and construction were a wheel [set at a right angle] within a wheel.

Then I looked and behold, [there were] four wheels beside the cherubim, one wheel beside one cherub and another wheel beside each other cherub; and the appearance of the wheels was like a sparkling Tarshish stone (beryl).

You were in Eden, the garden of God. Every precious stone was your covering, the ruby, topaz, and emerald, the chrysolite, onyx, and jasper, the sapphire, turquoise, and beryl; your settings and mounts were made of gold. On the day you were created they were prepared.