What makes Native American fire opal blades so sharp?
You can check the answer of the people under the question at Quora “fire opal knife“
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What makes Native American fire opal blades so sharp?
You can check the answer of the people under the question at Quora “fire opal knife“
About Alixa97
It’s the way opal fractures that gives it its edge.
Conchoidal fracturing is a fracture with a smooth long curved plane in fine-grained or amorphous materials
Most materials will follow a grain line when they fracture and will have squared blunt edges, materials line opal, flint, chert, obsidian have a very fine gr…
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