Obsidian ball

Category: Beautiful and amazing, PEGI 0+

21 June 2023

Homogeneous volcanic glass is formed in melts with a water content of no more than 1%. The more water-rich volcanic glasses that swell during the solidification of lava are among the perlites. On the other hand, slower cooling of the lava leads to normal crystallization of the melt: in this case, not glass would form, but the actual rock, consisting mainly of quartz, feldspar and mica.

Such beautiful objects are obtained from this material.

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