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Emerald is a gemstone and a variety of the mineral beryl (Be 3 Al 2 (SiO 3) 6) colored green by trace amounts of chromium or sometimes vanadium. [2] Beryl has a hardness of 7.5–8 on the Mohs scale. [2] Most emeralds have many inclusions, [3] so their toughness (resistance to breakage) is
The first ever recorded emeralds date back to ancient Egypt, where they were particularly admired by Queen Cleopatra. In addition to their aesthetic value, emeralds were highly valued in ancient times because they were believed to increase intelligence, protect marriages, ease childbirth, and thought to enable its possessor the power of ...
The Carl Blegen Library is located on the campus of the University of Cincinnati. The library has curated an exhibit named Discovering Carl Blegen which includes images from Blegen's major campaigns in Troy and Pylos as well as his work and life at UC and abroad. The Blegen Library at the American School of Classical Studies at Athens is named ...
The display explores eight ancient earthworks in central and southern Ohio, including sites in Newark, Chillicothe and Warren County. Eight 'Wonders of the World': Ohio History Center features ...
This is a list of National Historic Landmarks in Ohio and other landmarks of equivalent landmark status in the state. The United States' National Historic Landmark (NHL) program is operated under the auspices of the National Park Service , and recognizes structures, districts, objects, and similar resources according to a list of criteria of ...
Madisonville is the type site for the Madisonville phase of Fort Ancient pottery. The 5-acre site is located on a bluff above the Little Miami River about 5 miles upstream from the Ohio River. While occupied over hundreds of years, it was settled most intensively in the late sixteenth and early seventeenth centuries, and is the most excavated ...
3. Wheat Pennies. Every so often, news of a rare coin, perhaps a recently discovered misstep by the U.S. Mint, gets people emptying their pockets in search of a jackpot find — and good luck with ...
The Harpole Treasure was discovered in 2022, and refers to a collection of valuable relics unearthed from a burial ground in England. Among the finds was a unique piece of jewelry.