2 thoughts on “What does Zhou Dafu's pendant refer to the latter mathematics? Especially the last number?”

  1. CTF is the brand Chow Tai Fook.
    AU750 means 18K gold, with a gold content of 75%.

    D color
    0.133ct means that diamond weight is 0.133 carats, 1 carat is equal to 0.2 grams.

    The long string of numbers is the style number
    si is the clarity level, from high to low LC vs vvs Si P.

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