Then there are prayers and songs to the spirits of the righteous dead, to the seven high angels around the throne, the planets then known. The most spiritual are those addressed to Ahura-Mazda, "the Everlasting Light," who is described as an ineffable Being, full of brightness and glory. Zoroaster discovers God in the eternal invisible Fire. His wonder and joy over the first kindling of the flame arose from the spiritual symbolism that interpreted all nature to him. In it he recognizes the type of the immortal Light and the spiritual resurrection of the soul. Thrilling with religious fervor, he bows before the radiant light as the most subtle and all-dissolving element, and in feeling its mystery acknowledges the mystery of God, its Supreme Creator. Thus, all the rites and ceremonies of the ancient Fire-worshippers abound in symbols which typify the operations of nature, not only in the heavens, but also in the hidden recesses of the earth. They attribute the maturing of precious gems and metals to the peculiar influence of the sun, moon, and stars; and it is a curious fact that they called the seven metals by the very same names by which they denominated the seven planets, and the same peculiar hieroglyphic characters are used to this day to distinguish both. Among them certain stones represented certain virtues, and not a few were famed for their magical properties. The months of the year were spirits who exerted their influence over certain precious stones, which in their turn had power over the destiny of any person born during the period of their sway. Thus each month has its own presiding genius in the heavens and its appropriate symbol in the heart of the earth, bound up with the life and character of the individual born under their combined influence. The garnet, symbol of the presiding spirit of January, means constancy; the amethyst, of February, sincerity; the bloodstone, of March, courage and presence of mind; the diamond, of April, innocence; the emerald, of May, love; the agate, of June, health and long life; the carnelian, of July, contentment; sardonyx, of August, happiness; chrysolite, of September, antidote against madness, sane mind; opal, of October, hope; topaz, of November, fidelity; turquoise, of December, prosperity. Rings are still used among the more superstitious of the Parsees as charms and talismans against the evil eye, demons, and most of the ills inherent to the human flesh. Sometimes the virtue exists in the stone, sometimes in the magical letters engraved upon it, which are thought to have the power to preserve the owner from thunder, lightning, witchcraft, the evil eye, from sin, and from taking cold even when exposed to biting frosts and storms.