It is definitely necessary to know the 4C standard

 It is definitely necessary to know the 4C standard, and then choose a price that is acceptable at this level. Try to choose a large carat weight within the budget, but the cut is the direct factor affecting the fire of the diamond, because the diamond is not good enough will affect the fire at the same time which looks smaller.

  The second is to choose the color of the diamond[

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], and whether it is milk coffee diamond, clarity, fluorescence or not. Refer to the diamond certificate, it is best to have a US GIA certificate, this certificate is a clearer identification of each of the diamonds, and even the location of the defects are marked.