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Clarity grading in coloured gemstones is based on the eye-clean standard, that is, a gem is considered flawless if no inclusions are visible with the unaided eye (assuming 20/20 vision). [29] The Gemological Institute of America classifies tanzanite as a Type I gemstone, meaning it is normally eye-clean.
In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...
Ammolite is also known as aapoak (Kainah for "small, crawling stone"), gem ammonite, calcentine, and korite. The latter is a trade name given to the gemstone by the Alberta-based mining company Korite. Marcel Charbonneau and his business partner Mike Berisoff were the first to create commercial doublets of the gem in 1967. They went on to form ...
Boeing’s outlook just got a whole lot worse: Alaska Airlines CEO says it found loose bolts on ‘many’ planes, while United Airlines blasts delays Eleanor Pringle January 24, 2024 at 4:16 AM
Federal investigators are searching for a missing piece of an Alaska Airlines aircraft’s fuselage that blew off as they investigate what led to the horrifying midair ordeal that has resulted in ...
A regional airline flight that disappeared in Alaska Thursday has been found and all 10 people who were aboard are dead, the US Coast Guard said Friday. The small commuter aircraft was found ...
Barnhill & McGee Airways, one of the earliest air services in Alaska, was founded in Anchorage as a partnership between Harvey W. Barnhill and Linious "Mac" McGee in 1932. [1] The airline served McGee’s fur business and offered service between Anchorage and Bristol Bay.
A plane carrying 10 people went missing in rural Alaska during a dangerous winter storm, with the U.S. Coast Guard and Air Force scouring the ground for survivors and medical personnel “standing ...