Large Guerrero amethyst, known for its fine quality and deep reddish-purple…

Large Guerrero amethyst, known for its fine quality and deep reddish-purple color, is characterized by elongated, fat crystals with quartz terminations, found in veins and pods related to gold-iron skarn deposits in the Sierra Madre del Sur mountains of Mexico. Here’s a more detailed breakdown of Guerrero amethyst properties: Location: The Guerrero amethyst mines are located in the mountains northeast of Amatitlan, in the Sierra Madre del Sur of north-central Guerrero State in Mexico. Color: These amethysts are known for their deep reddish-purple color. Shape: They are characterized by elongated crystals that are fat around the lower and middle area. Termination: The crystals have quartz terminations. Geological Context: The mines are located in veins and pods related to gold-iron skarn deposits, found in lower Cretaceous dolomitic limestones, calcareous shales, and intrusion by lower Tertiary granodiorite stocks. Other Notable Features: Some Guerrero amethyst specimens exhibit multiple generations of growth, including chalcedony and hematite-included quartz, adding to their visual appeal.