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Piece of obsidian glass

Obsidian glass is a naturally occurring rare volcanic mineral formed as an extrusive igneous rock.

Due to the vast sources of the mineral on the islands of Hydrea and Melos they were known as the Obsidian Islands.[1]


Obsidian was used by farmers and warriors for thousands of years before the introduction of bronze rendered it obsolete.[2]

5th century BCE

The obsidian eye of the Cyclops of Kephallonia

During the 5th century BCE, the Cyclops of Kephallonia had a prosthetic eye made of obsidian glass. The Spartan misthios Kassandra infiltrated Cyclops' residence and stole the eye on the advice of Markos.[3] Kassandra also used obsidian glass to better her gear.[4]

1st century BCE

Obsidian was still used in Egypt during the Ptolemaic Kingdom's reign. As such, the Medjay Bayek of Siwa obtained a bow made out of it.[5]

9th century

During the Viking expansion into England, the warrior Eivor found obsidian deposits throughout the land which they used to improve their gear.[6]

18th century

A Mayan obsidian dagger

During the 18th century, the Assassin Aveline de Grandpré purchased an axe made out of obsidian[7], and around the same time, the pirate Alonzo Batilla procured a Mayan variant of the axe as well as a dagger made of obsidian.[8]

19th century

Obsidian was occasionally used at later dates as well. During the Victorian era in late 19th-century London, a kukri was made out of it, and it was also used in the handle of a cane-sword. These both ended eventually in the hands of the British Assassins Evie and Jacob Frye.[9]




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