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  2. Ring size - Wikipedia

    en.wikipedia.org/wiki/Ring_size

    Originally in 1945, the divisions were based on the ring inside diameter in steps of 1 ⁄ 64 inch (0.40 mm). [6] However, in 1987 BSI updated the standard to the metric system so that one alphabetical size division equals 1.25 mm of circumferential length. For a baseline, ring size C has a circumference of 40 mm. [7]

  3. The symbolism and meaning behind different engagement ring shapes

    www.aol.com/symbolism-meaning-behind-different...

    Selecting the perfect engagement ring isn't simply about the brilliance or the size of the diamond, it's also about the meaning behind the ring shape. ... The 360-degree circular symmetry of a ...

  4. Traditional point-size names - Wikipedia

    en.wikipedia.org/wiki/Traditional_point-size_names

    (11) Diamond (4.5 pt, 1.5875 mm). Fonts originally consisted of a set of moveable type letterpunches purchased from a type foundry . As early as 1600, the sizes of these types—their "bodies" [ 1 ] —acquired traditional names in English, French, German, and Dutch, usually from their principal early uses. [ 2 ]

  5. Diamond cut - Wikipedia

    en.wikipedia.org/wiki/Diamond_cut

    These diamond saws and good jewelry lathes enabled the development of modern diamond cutting and diamond cuts, chief among them the round brilliant cut. In 1919, Marcel Tolkowsky analyzed this cut: his calculations took both brilliance (the amount of white light reflected) and fire into consideration, creating a delicate balance between the two ...

  6. Brilliant (diamond cut) - Wikipedia

    en.wikipedia.org/wiki/Brilliant_(diamond_cut)

    The 2005 AGS cut standards are based on a distance of 25 centimeters (about 10 inches). The 2004 HCA cut standards are based on a distance of 40 centimeters (about 16 inches). Polish and symmetry are two important aspects of cut. The polish grade describes the smoothness of the diamond's facets and the symmetry grade refers to alignment of the ...

  7. Point (typography) - Wikipedia

    en.wikipedia.org/wiki/Point_(typography)

    The French National Print Office adopted a point of 2 ⁄ 5 mm or 0.400 mm in about 1810 and continues to use this measurement today (though "recalibrated" to 0.398 77 mm). [ 21 ] [ 22 ] [ 23 ] Japanese [ 24 ] and German [ 9 ] [ 16 ] [ 18 ] standardization bodies instead opted for a metric typographic base measure of exactly 1 ⁄ 4 mm or 0.250 ...

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Unit of length - Wikipedia

    en.wikipedia.org/wiki/Unit_of_length

    A ruler, depicting two customary units of length, the centimeter and the inch. A unit of length refers to any arbitrarily chosen and accepted reference standard for measurement of length. The most common units in modern use are the metric units, used in every country globally.