King James Version (KJV) - Revelation 21:21 >

And the twelve gates [were] twelve pearls; every several gate was of one pearl: and the street of the city [was] pure gold, as it were transparent glass.

Berean Study Bible (BSB) - Revelation 21:21 >

And the twelve gates were twelve pearls, with each gate consisting of a single pearl. The main street of the city was pure gold, as clear as glass.