Lightning Stone (Fulgurite)
Origin: Sahara
Size: 13,5 cm approx.
A specimen of Fulgurite, produced by a lightning strike on sands with a high silica content. The impact can reach a temperature of 4000°C, becoming vitrified in the sand.
It occurs mainly in deserts. In this case, in the Sahara Desert.
![](https://kunugi.es/mayor/images/alternativas/0502-120-13cmmedio-2.jpg)