269. And there was a rainbow round about the throne in aspect like unto an emerald. That this signifies the appearance of Divine truth in the heavens surrounding the Lord is evident from the signification of a rainbow in aspect like unto an emerald, as denoting the appearance of Divine truth in its circumference; for a rainbow round about the throne signifies Divine truth around it, and in aspect signifies appearance. The reason why the appearance of the rainbow was like that of an emerald, is that it indicated the Last Judgment, for the colour of this stone is green, and green signifies truth obscured. Divine truth in its splendour appears either of a sky-colour, or of various colours disposed in beautiful order, as those of the rainbow; but when it is obscured it appears of the colour of an emerald. The heaven which is called the former heaven was that on which judgment was to be executed, and which was about to perish (see Apoc. 21:1) which caused the obscurity. This is why mention is made of a rainbow, and its aspect like that of an emerald. The reason why the rainbow signifies Divine truth in the heavens in its order, and thence in its beauty, is that there are infinite varieties of truth from good in the heavens; and when they are represented by colours, they present the appearance of a beautiful rainbow. This is why the rainbow was made a sign of the covenant after the flood (Genesis 9:12-17). (That there are infinite varieties in the heavens may be seen in the work, Heaven and Hell 56, 405, 418, 486, and in the small work, The Last Judgment 13; and in Arcana Coelestia 684, 690, 3744, 5598, 7236, 7833, 7836, 9002. That colours in heaven appear from the light there, and that they are its modifications and variegations, n. 1042, 1043, 1053, 1624, 3993, 4530, 4742, 4922; and that the colours appear various according to the varieties of the states of truth from good, and thence of intelligence and wisdom, n. 4530, 4677, 4922, 9466. That rainbows appear in heaven, and whence and what they are, n. 1042, 1043, 1623, 1624, 1625.)

114. The truth of faith was also meant and represented in the Word precious stones, for example, those in the breast plate of judgement, and upon the shoulder-pieces of Aaron's ephod. in the breastplate, the gold, blue, purple, double-dyed scarlet, and fine-twined linen represented matters of love, while the precious stones represented matters of faith deriving from love, as did the two stones of remembrance on the shoulder-pieces of the ephod which were made from shoham encompassed with settings of gold, Exodus 28:9-22. The same point, that the truth of faith is meant and represented by precious stones, is plainly stated in Ezekiel when the subject is the person who possesses the heavenly riches of wisdom and intelligence,

Full of wisdom and perfect in beauty, you were in Eden, the garden of God. Every precious stone was your covering ruby, topaz, diamond, tarshish, shoham, and jasper, sapphire, chrysoprase, and emerald. And gold, the work of your drums and of your pipes, was within you. On the day that you were created they were prepared. You were perfect in your ways from the day you were created. Ezekiel 28:12-13, 15.

Anyone may see that celestial and spiritual things of faith, and not just stones, are meant. Indeed each stone represented a particular essential element of faith.