Revelation 21:15-21

The Angel speaking with me had a gold measuring stick to measure the City, its gates, and its wall. The City was laid out in a perfect square. He measured the City with the measuring stick: fifteen hundred miles, its length, width, and height all equal. Using the standard measure, the Angel measured the thickness of its wall: seventy-two yards. The wall was jasper, the color of Glory, and the City was pure gold, translucent as glass. The foundations of the City walls were garnished with every precious gem imaginable: the first foundation jasper, the second sapphire, the third agate, the fourth emerald, the fifth onyx, the sixth carnelian, the seventh chrysolite, the eighth beryl, the ninth topaz, the tenth chrysoprase, the eleventh jacinth, the twelfth amethyst. The twelve gates were twelve pearls, each gate a single pearl.