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A ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, alongside amethyst, sapphire, emerald, and diamond. The word ruby comes from ruber, Latin for red. The color of a ruby is due to the element chromium.
Read the full article →Not who you're looking for? Others named ruby: city in Alaska, United States · 1977 album by American rock group Ruby · human settlement in Washington, United States of America · unincorporated community in Leflore County, Mississippi