Nature's blade cuts deeper than steel 🔪 Obsidian forms edges just three nanometers thick—500 times sharper than surgical steel and precise enough that some surgeons choose volcanic glass over metal scalpels. This naturally occurring material proves that sometimes the most advanced cutting technology isn't manufactured in labs but forged by Earth's molten core millions of years ago. #Obsidian #VolcanicGlass #SurgicalPrecision #NaturalMaterials #MedicalInnovation #SharpestBlade #GeologyFacts #Sci
Nature's blade cuts deeper than steel 🔪 Obsidian forms edges just t…
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