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This certi cate of authenticity guarantees the quality of each precious
stone selected by Longines’ specialists.
The cut: Longines diamonds are cut in the traditional brilliant style.
The purity: the degree of purity of a Longines diamond is VVS (very
very small inclusions). This means that it may include minute imper-
fections which are hardly visible under tenfold magni cation (VVS).
Longines bows to the paragon of beauty: the diamond
The colour: the colour of the diamonds used by Longines is
Top Wesselton.
The weight: the weight of a diamond is measured in carats, one
carat being equal to one fth of a gram.
CERTIFICATE OF AUTHENTICITY
Book_I.indb 65 13.08.19 10:56
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