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Did you know that there is a stone that is the sharpest and most dangerous weapon in the world? This is the obsidian blade, which is a volcanic rock formed when lava cools very quickly, creating a natural dark glass material. What makes obsidian interesting is not only its appearance, but also its sharpness. In its properly sharpened form, an obsidian blade can have a tip as sharp as a single molecule, which is much sharper than a conventional steel scalpel. In fact, long before modern surgical technology was invented, obsidian was used for surgery because it produced smoother incisions and less scarring. But despite its advantages, obsidian has a major drawback: it is extremely fragile. Minor pressure or impact can cause it to crack or break. Therefore, its use as a surgical tool or weapon is more specialized and very limited.


#stone #rock #obsidian #blade #natural #nature #facts #education

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