"At dawn Nectanebo pulled one tablet of such rare and royal wealth that words could not divulge its effect. It was made of ivory, ebony, silver and gold, three concentric circles were engraved, the first circle carried the decans, the second the twelve signs of the zodiac and the third the Sun and the Moon. He put the tablet on a seat. Then he opened an ivory box, very small, out of which he took seven constellations and the horoscopos (= the ascendant).
With eight metals extracted from stones, he started to draw the map of the sky of that moment. He lit the Sun with a crystal and the Moon with a diamond, Ares in hematite, emerald for Hermes, skystone (pierre de ciel) for Zeus, and a sapphire for Aphrodite, for Chronos a serpentine stone * and at the centre he placed the white marble for the horoscopos.
Then he said: “Show me, my queen, the year, month, day and time of your birth. Once she had done, Nectanebo, with the help of coins, calculated the birth of her and himself to see their astrological concordance. When he saw that they were positive, he asked: “Tell me, my queen, what do you want to know?"
*In healing usage, serpentine aids the clearing of blocked areas, brings the chakras back in balance and also is very beneficial for the heart chakra.