👉 Muthmannite is a type of quartz mineral that is found in many different parts of the world. It has a distinctive appearance, which can be described as "mottled" or "scaly." The texture and size of the crystals vary depending on their source, but they are generally large and have been reported to weigh up to 50 grams. Muthmannite is known for its unique coloration, which can range from light blue to dark green. It has a high
