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Mayor Island obsidian (a black, glassy rock) was widely used for making tools because it could be easily trimmed, and retained sharp edges. It was widely traded through New Zealand. This flake knife was found near Gisborne.
Using this item
Auckland War Memorial Museum Tamaki Paenga Hira
Reference: AR8619
Permission of the Auckland War Memorial Museum Tamaki Paenga Hira must be obtained before any re-use of this image.