The handmade 437G Yooperlite Crystal Mjölnir is a striking piece that combines the ancient Norse symbol of Thor's hammer with the unique beauty of Yooperlite, a fluorescent rock discovered in the Upper Peninsula of Michigan. Weighing 437 grams, this artisanal item showcases intricate craftsmanship and features the captivating luminescence characteristic of Yooperlite, which glows under UV light due to its contained sodalite. The Mjölnir shape not only signifies strength and protection but also serves as an eye-catching decorative object or talisman, perfect for collectors or enthusiasts of mythology and natural wonders alike.