+Sapphire is a precious [gemstone](/wiki/gemstone), a variety of the mineral [corundum](/wiki/corundum). Most famous for its deep blue hue, it also occurs in many other colors. Revered for its beauty and exceptional hardness, sapphire is often used in jewelry and industrial applications.
+## See also
+- [Ruby](/wiki/ruby)
+- [Emerald](/wiki/emerald)
+- [Diamond](/wiki/diamond)
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