Located in the center of the front of the diamond appraisal certificate, it should be a physical photo of the corresponding diamond ring or cut diamond. The photos taken and pasted on the certificate should be consistent with the purchased objects.

Number:

Regular diamond appraisal certificate will have a diamond jewelry number, which should be consistent with the number on the price tag attached to the diamond ring. This number is generally not repeated, only.

Steel seal:

The diamond appraisal certificate must be clearly stamped with the words appraisal unit and the anti-counterfeiting mark of the appraisal unit.

Date:

The date on the certificate refers to the valuation date of the diamond.

Shape &; Cut):

Refers to the cutting and grinding shape of diamonds. Generally, round diamonds are common, including squares and diamonds.

Measures:

This project records the maximum diameter of the diamond and the size of the main parts of the whole body, in mm.

Weight (weight):

On the certificate, the weight unit of diamond is carat, accurate to the third decimal place. Also marked as the total weight, the unit is generally gram (g).

Color grade:

According to GIA's color grading table, diamonds are classified into 23 grades, from completely colorless D to yellowish brown Z. Among them, D.E.F belongs to the colorless range, G.H.I.J belongs to the near colorless range, K.L.M is light yellow, and below N is light yellow. The name below Z is colored diamond, which is very expensive.

Transparency level:

The classification of diamond clarity grade is the sum of the internal characteristics and external characteristics of diamonds detected by skilled appraisers under a magnifying glass of ten times. Factors such as the size, number, location, characteristics, color or visibility of features determine the level of clarity. It is divided into five levels: FL (flawless), VVS (minimal flaw), VS (minimal flaw), SI (minor flaw) and I (big flower).