I’ve been coming across videos of people breaking obsidian chunks to make arrowheads but could never find the answer why it could be broken with light hits with a rock, and then not break when in use with said weapon.
In: 564
Used? Was used.
Reason: Very sharp and relatively easy access where it can be found, easy to work with, also pretty.
Also, the assumption that it is not broken when used in weapon is wrong. It gets broken, constantly. Except that people brake obsidian to get a usable shape to use as a weapon. An obsidian edge will always be crazy sharp. This means that once made into a weapon, it doesn’t matter if it breaks anymore, the general shape is conserved, and this can even be said to be self-sharpening. You may strike, it may be blocked, but the impact will break off a flake of the blade, resulting in a sharp edge again, while a flint edge would have just blunted.
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