By the way, amethyst is the third gemstone with hexagonal crystals. The three: amethyst, emerald and beryl form a triangle within the circle. The Greek author Lucian, in the second century A.D., describes in his Vera Historia the city of the Islands of the Blessed. The walls of this city are of emerald, the temples of beryl, and the altars therein of single amethysts.
Complementary qualities appear in amethyst and carnelian, love of one's neighbor is both conditional to and as a result of the way which leads to resurrection. They are the response (German: Antwort) on the Word of God.
Bringing now together the qualities which arise between the pairs of gemstones we recognize the "armor of God" St.Paul describes in the sixth chapter of his epistle to the Ephesians:
"Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness and your feet shod with the preparation of the gospel of peace. Above all, taking the shield of faith, wherewith ye shall be able to quench all the fiery darts of the wicked and take the helmet of salvation and the sword of the spirit, which is the Word of God. Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints."
- Dr. Simon van der Heide, Haarlem, Holland- past Secretary-General of the International Union of Geological Sciences.