Muonionalusta - Mineral willpower Approximate Size of 1 pair:

Approximate Size of 1 pair: 17

These Pakistani specimens are especially beautiful

University of Arizona

and chalcedony more generally

Muonionalusta - Mineral willpower Approximate Size of 1 pair:Mined from: Northern Sweden Description: Muonionalusta is a well known iron meteorite classified as a fine octahedrite (IVA), discovered in northern Sweden where it fell roughly one million years ago. Composed primarily of iron and nickel, this meteorite formed within the core of a differentiated parent body, most likely asteroid 16 Psyche. Over time, slow cooling in space allowed its internal metallic structure to organize into interlocking crystal