Weight:  31

They can vary in size

This is a superb and rare Iron ungrouped classified Taza Northwest Africa 859 specimen displaying major league Regmaglypts

Its dimensions are 70x32x32 mm

This is a must have 4

Fulgurite | Natural Lightning Impact Glass | 1.44 Grams | Sahara | SO24 Feldspar Weight: 31Fulgurite, also known as fossilized lightning, are natural glass tubes or formations that are created by the heat of lightning strikes. When a lightning bolt hits the ground it generates temperatures of up to 30,000 Kelvin (over 53,000F), hotter than the surface of the sun. This intense heat melts the silica rich sand and fuses it almost instantly, forming hollow branching structures that solidify as they cool. In the Sahara Desert where thunderstorms