Amethyst. A variety of crystallized quartz, of a purple or bluish violet color, of different shades. It is much used as a jeweler's stone. In value it is about the same as the garnet.
“Be strong and courageous. Do not be afraid or terrified because of them, for the LORD your God goes with you; he will never leave you nor forsake you.”
– Deuteronomy 31:6