Made from a synthetic version of the highly-prized sapphire gemstone, new transparent armor is lighter, thinner and pulverizes bullets on impact. Currently used by the military on powerful missile ...

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Sapphire is a corundum gemstone that has meaning, properties, and uses. Corundum gemstones are the crystalline form of aluminum oxide with traces of iron, titanium, vanadium, and chromium. Sapphire is ...

A STUNNING purple gem potentially worth nearly £300 million has been found in Sri Lanka. The ‘Purple Star Sapphire’ weighs an incredible 3,563 carats – and may be the biggest natural star sapphire ...

Look for durable gemstone engagement rings, such as those made with sapphires, rubies and emeralds. One thing to keep in mind: Sapphire, ruby, topaz, aquamarine and amethyst are some of the most ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Jun 26, 2025, 02:26pm EDT Jun 27, 2025, 05:34am EDT A medieval ...