Amethyst is a purple variety of Quartz often used as an ornament. Upon exposure to heat, Amethyst generally becomes yellow, which some refer to as Citrine or “burnt” Amethyst. It occurs in color from a light, slightly pinkish violet to a deep grape purple. It is widely distributed as a mineral, but fine, clear specimens that are suitable for cutting as ornamental stones.
Goethite is an Iron bearing Oxide mineral found in soil and other low temperature environments. Historically, Goethite has been used as a paint pigment found on cave paintings in France. Its main modern use is that of an Iron Ore content or objects using Iron Ore. Goethite is found worldwide usually in the form of concretions, stalactitic formations, oolites, reniform or botryoidal accumulations.