Then I heard something like a voice from among the four living creatures saying, "A quart of wheat will cost a day's pay and three quarts of barley will cost a day's pay. But do not damage the olive oil and the wine!"

the fifth onyx, the sixth carnelian, the seventh chrysolite, the eighth beryl, the ninth topaz, the tenth chrysoprase, the eleventh jacinth, and the twelfth amethyst.

And the twelve gates are twelve pearls -- each one of the gates is made from just one pearl! The main street of the city is pure gold, like transparent glass.