The science behind Dragonglass: Our ancestors created tools from the volcanic rock obsidian for 1.7 million years, because it's easy to shape and has a razor-sharp edge. "When viewed under a microscope, a steel surgical scalpel would look like a dull and badly abused axe next to an obsidian flake.”

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The science behind Dragonglass: Our ancestors created tools from the volcanic rock obsidian for 1.7 million years, because it's easy to shape and has a razor-sharp edge. "When viewed under a microscope, a steel surgical scalpel would look like a dull and badly abused axe next to an obsidian flake.”