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Herkimer diamonds are double-terminated quartz crystals discovered within exposed outcrops of dolomite in and around Herkimer County, New York, and the Mohawk River Valley in the US. [ 1 ] [ 2 ] They are not diamonds ; the "diamond" in their name is due to both their clarity and well formed faces.
The diamond hoax of 1872 (sometimes called The Great Diamond Hoax of 1872) [1] [2] was a swindle in which a pair of prospectors sold a false American diamond deposit to prominent businessmen in San Francisco and New York City.
The largest diamond found by a park visitor in the Crater of Diamonds State Park in Arkansas since 1972, when it was established as a state park. It was found by W. W. Johnson of Amarillo, Texas in 1975 and was a 16.37 carats (3.27 g) white diamond, but it has since been cut into a 7.54 carats (1,510 mg) marquise shape.
^ Florida's state gem, moonstone, was adopted to highlight Florida's role in the United States' Lunar program, which landed the first astronauts on the Moon. [81] ^ Since 1983, Massachusetts has had 3 other official state rocks: State Historical Rock (Plymouth Rock), State Explorer Rock (Dighton Rock), and State Building and Monument Stone . In ...
The State Archeologist has catalogued more than 43,000 Native American living, hunting and tool-making sites, many of them Pre-Columbian burial mounds and rock shelters. Crater of Diamonds State Park near Murfreesboro is the world's only diamond-bearing site accessible to the public for digging.
The 94.4-carat pear-shaped Cullinan III and the 63.6-carat square-cut Cullinan IV were originally set into Queen Mary's coronation crown (which also held the famous Koh-i-Noor diamond).
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The flag's elements have a complex symbolism. According to the 1987 state law defining the flag, [7] the diamond represents Arkansas' status as "the only diamond-bearing state in the Union". (Crater of Diamonds State Park was the only diamond mine in North America at the time, before more recent discoveries in Colorado and Montana. However, the ...