This Bora amethyst necklace exemplifies the juxtaposition of materials that is a trademark of Bora jewelry. Item #615-01443 $540.00 Amethyst is a purple variety of quartz. It is part of the hexagonal crystal system. Amethyst is a semiprecious stone with a vitreous or glassy luster. It often comes in shades of violet and purple. The meaning of Amethyst is spiritual healing, calmness, and wisdom.