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  2. Gemological Institute of America - Wikipedia

    en.wikipedia.org/wiki/Gemological_Institute_of...

    Diamond reports from GIA (as well as other, for-profit sources) are now demanded by most consumers purchasing diamonds over a certain size, typically for over 0.5 carat (100 mg), and almost always for over 1.0 carat (200 mg), and are considered an important tool in guaranteeing that a diamond is accurately represented to a potential buyer.

  3. Allison and Roberto Mignone Halls of Gems and Minerals

    en.wikipedia.org/wiki/Allison_and_Roberto_Mignon...

    The Allison and Roberto Mignone Halls of Gems and Minerals are a series of exhibition halls at the American Museum of Natural History on the Upper West Side in Manhattan, New York City. The halls opened on June 12, 2021, as a complete redesign of their predecessors, the Harry Frank Guggenheim Hall of Gems and Minerals and Morgan Memorial Hall ...

  4. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    ^ 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 ...

  5. List of individual gemstones - Wikipedia

    en.wikipedia.org/wiki/List_of_individual_gemstones

    American Golden Topaz, the largest cut yellow topaz, weighing nearly 23,000 carats (4.6 kg). Chalmers Topaz , a 5,899.5-carat (1.17990 kg) cut topaz. Tsavorite

  6. Great Diamond Hoax - Wikipedia

    en.wikipedia.org/wiki/Great_Diamond_Hoax

    Further investigation showed Arnold and Slack bought cheap cast-off diamonds, refuse of gem cutting, in London and Amsterdam for $35,000 and scattered them to "salt" the ground. Most of the gems were originally from South Africa. Arnold returned to his home in Elizabethtown, Kentucky, and became a successful businessman and banker. Diamond ...

  7. 15 least-visited national parks of 2023. Pinnacles National Park - 341,220 visits, up from 275,023. Channel Islands National Park - 328,746 visits, up from 323,245

  8. List of diamonds - Wikipedia

    en.wikipedia.org/wiki/List_of_diamonds

    Discovered in 2015, it is the 5th largest diamond ever discovered at the Crater of Diamonds State Park, Arkansas Identified as a Type IIa crystal, the 8.52 carat diamond was cut and polished by Mike Botha into a custom-designed 4.605 carat Triolette shape during a week long event in North Little Rock and was graded a D IF, 0 Polish & 0 Symmetry ...

  9. Complaint alleges Harvard didn't protect pro-Palestinian ...

    www.aol.com/news/complaint-alleges-harvard-didnt...

    Over a dozen students alleged on Monday that Harvard University failed to protect them from harassment and threats "based solely" on their pro-Palestinian identity, the group representing them said.