Sapphire gemstones
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Sapphire gemstones
Sapphire gemstones. Sapphires are a non-red variety of the mineral corundum (aluminium oxide). It is the second hardest mineral after diamond, rated 9 out of 10 on the Mohs scale. Although blue is the most common colour, golden, white and even black are used as gemstones. Inclusions of the mineral rutile (titanium oxide, not seen) causes a six-pointed-star light effect (asterism) to form star sapphire
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Media ID 6344183
© LAWRENCE LAWRY/SCIENCE PHOTO LIBRARY
Aluminium Oxide Blue Corundum Earth Science Gem Stone Gem Stones Gems Mineral Natural Polished Sapphire Stone Stones Sapphires
EDITORS COMMENTS
This print showcases the mesmerizing beauty of Sapphire gemstones. Known as a non-red variety of the mineral corundum, these gems are composed of aluminum oxide and rank second only to diamonds in terms of hardness on the Mohs scale. While blue is the most prevalent color, sapphires also come in stunning shades of golden, white, and even black, all prized for their exquisite brilliance. In this image, we witness a collection of cut and polished sapphire gemstones that have been carefully selected from nature's treasure trove. Each stone reflects light with unparalleled radiance due to its exceptional clarity and precision cutting. However, what truly sets some sapphires apart is the presence of rutile—a titanium oxide mineral not visible here—that creates an enchanting six-pointed-star effect known as asterism within certain specimens; these rare star sapphires are highly sought after by collectors worldwide. As we marvel at this photograph captured by Science Photo Library—remembering not to associate it with any commercial use—we are reminded once again why Earth's geological wonders never cease to amaze us. These precious gemstones serve as timeless reminders that nature holds within itself extraordinary treasures waiting to be discovered and cherished for generations to come.
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