A. certificate of national jewelry and jade quality supervision and inspection center.
B.GIA certificate (American Gemological Institute).
C.HRD certificate (Belgian Diamond High Council)
D.IGI certificate (World Gemological Society)
E.GL certificate (European Gemological Institute)
The first two are the most common certificates.
For example: GIA certificate
First, the certificate cover
Friends who are familiar with GIA's certificate will know that this is GIA's colored gems certificate, which means that GIA's identification of Mosan stone is done according to the format of colorful treasure.
Two. Certificate name
There is a certificate number on the certificate header, and relevant information can be found in GIA (Gemo Logic Institute, USA) through the number.
Three. Details and results
The detail part includes the description of four aspects of the sample stone.
1. shape (circle)
2. Cutting mode (bright cutting)
3. Transparency (transparency)
4. Color (almost colorless)
Results In some kinds of columns, synthetic mosan stone was given.
Four. describe
1. Description: A bare stone.
2. Weight: 2. 18 carat
3. Size: minimum diameter 9.0mm-maximum diameter 9.04mm * depth 5.12mm.
4. Remarks: This is an artificial material synthesized in the laboratory. The sample stone (waist) is marked.
Verb (abbreviation of verb) with drawings
At the end of the certificate, attach a photo of the sample stone.
Mosan stone, also known as Mosan diamond, can be traced back to the end of19th century. The word mosangshi comes from Dr. Henri Moissan, who discovered this mineral in the crater of Arizona in 1904. Mosan stone in the market is mostly synthetic, and natural Mosan stone is very rare, only appearing in craters, and its color is mostly dark green and black.
Only when it reaches D color, has a unique Belgian cut and FL/IF clarity grade, can this top-grade Mosan diamond be called a magic star diamond.
The appearance of Mosan stone is very similar to natural diamond, which is difficult to distinguish with naked eyes, and it is also the gem with the closest physical characteristics to natural diamond.