06:56
Mody87
The estimation of diamonds of jewelry quality depends on size of a crystal, its colour, degree of a transparency, the form, presence or absence of cracks and inclusions, and also micro defects Engagement Rings. The size of jewelry diamonds is estimated in carats, i.e. in the weight units corresponding to a parity: 1 carat is equal 200 mg of weight. It is so called metric carat which is accepted since 1907 under the decision of General conference of measures and scales in Paris. The term carat has most likely the Greek roots and goes from seeds of acacia Seratonia siligna which average weight is equal approximately 0,205 G.Smith, 1980 . Weighing of diamonds is carried out on electronic scales to within 3rd sign after a comma.
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