Editing Obsidian (section)

===Europe===
Obsidian artifacts first appeared in the European continent in Central Europe in the [[Middle Paleolithic]] and had become common by the [[Upper Paleolithic]], although there are exceptions to this. Obsidian played an important role in the [[Neolithic Revolution|transmission of Neolithic knowledge and experiences]]. The material was mainly used for production of [[chipped tools]] which were very sharp due to its nature. Artifacts made of obsidian can be found in many Neolithic cultures across Europe. The source of obsidian for cultures inhabiting the territory of and around Greece was the island of [[Milos]]; the [[Starčevo–Körös–Criș culture]] obtained obsidian from sources in Hungary and Slovakia, while the [[cardium (pottery)|Cardium]]-Impresso cultural complex acquired obsidian from the island outcrops of the central [[Mediterranean]]. Through trade, these artifacts ended up in lands thousands of kilometers away from the original source; this indicates that they were a highly valued commodity.<ref>{{cite journal|last1=Tripković|first1=Boban|title=The Quality and Value In Neolithic Europe: An Alternative View on Obsidian Artifacts|journal=South Eastern Europe Proceedings of the ESF Workshop, Sofia|volume=103|year=2003|pages=119–123|url=https://www.academia.edu/452257|access-date=June 21, 2019}}</ref> [[John Dee]] had a mirror, made of obsidian, which was brought from Mexico to Europe between 1527 and 1530 after Hernando Cortés's conquest of the region.<ref name="bl.uk">{{Cite web|url=https://www.bl.uk/collection-items/john-dees-spirit-mirror|archive-url=https://web.archive.org/web/20200401121456/https://www.bl.uk/collection-items/john-dees-spirit-mirror|url-status=dead|archive-date=April 1, 2020|title=John Dee's spirit mirror – The British Library|date=April 1, 2020|access-date=April 1, 2020}}</ref>