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A certificate of analysis (COA) is a formal laboratory-prepared document that details the results of (and sometimes the specifications and analytical methods for) one or more laboratory analyses, signed—manually or electronically—by an authorized representative of the entity conducting the analyses. This document gives assurances to the ...
There are now several professional schools and associations of gemologists and certification programs around the world. The first gemological laboratory serving the jewelry trade was established in London in 1925, prompted by the influx of the newly developed "cultured pearl" and advances in the synthesis of rubies and sapphires. [ 6 ]
Gem-A emerged from an Education Committee set up by The National Association of Goldsmiths (NAG) in 1908. [1] As the study of gemmology grew in popularity, NAG established the Gemmological Association as an independent branch in October 1931, under the successive presidencies of Henry Miers, William Bragg and Herbert Smith.
Gemological Institute of America (GIA) was the first laboratory in America to issue modern diamond reports, [31] and is held in high regard amongst gemologists for its consistent, conservative grading. Diamond High Council (HRD) Official certification laboratory of the Belgian diamond industry, located in Antwerp. [32]
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Donald Trump said during a press conference that he will make “major pardons” for Jan. 6 defendants who stormed the Capitol four years ago.
Texans wide receiver Nico Collins saw a fan in the stands and tossed him a football following a Nov. 24 touchdown against the Titans. The move earned him a fine by the NFL.
None of President-elect Trump's Cabinet nominees can be confirmed until he takes office on Jan. 20 – and expect a traffic jam in the Senate when he does.