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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. International Gemological Institute - Wikipedia

    en.wikipedia.org/wiki/International_Gemological...

    IGI provides independent grading reports, colored stone reports, identification and appraisal reports, diamond authentication and attestations of origin, and laser inscription services. They also offers diamond and colored stone courses through IGI's Schools of Gemology. The IGI school was the first to offer the practical Rough Diamond course. [4]

  4. Richard T. Liddicoat - Wikipedia

    en.wikipedia.org/wiki/Richard_T._Liddicoat

    In 1953, Liddicoat introduced the GIA diamond grading system - a practical approach to grading the quality of colorless to light yellow polished diamonds on the basis of color, clarity, and cut. A central feature was the D-to-Z color grading system for faceted colorless to light yellow diamonds—the vast majority of diamonds seen in the trade.

  5. Diamond clarity - Wikipedia

    en.wikipedia.org/wiki/Diamond_clarity

    Diamond clarity is the quality of diamonds that relates to the existence and visual appearance of internal characteristics of a diamond called inclusions, and surface defects, called blemishes. Clarity is one of the four Cs of diamond grading, the others being carat , color , and cut .

  6. American Gem Society - Wikipedia

    en.wikipedia.org/wiki/American_Gem_Society

    Primary among these are their diamond grading services. Jewelers are able to have their diamonds scientifically evaluated according to the Four Cs: Color, Clarity, Cut, and Carat Weight. They are then given a diamond grading report, which can be provided to a consumer in order to verify the quality of the diamond they are purchasing. [3]

  7. The Year Without a Santa Claus, a Christmas special from Jules Bass and Arthur Rankin, Jr., turns 50 this December. The beloved special was adapted from the book of the same name by Phyllis ...

  8. My Husband's Grandpa Cracked the Code to the Best-Ever ... - AOL

    www.aol.com/lifestyle/husbands-grandpa-cracked...

    A traditional snickerdoodle recipe includes unsalted butter, granulated sugar, eggs, all-purpose flour, cream of tartar, baking soda and salt.

  9. Gemological Science International - Wikipedia

    en.wikipedia.org/wiki/Gemological_Science...

    GSI Gemological Laboratory performs a number of services including: loose and mounted diamonds grading; origin testing of loose and mounted diamonds and gemstones; cut grade analysis; light analysis reports; gemstone identification; sorting and screening of melee; treatment identification; laser inscription on diamonds and gemstones; metal engraving; metal inspection; and 360-degree virtual ...

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