wholesale jewelry agreement template What is the GIA diamond grading standard?
3 thoughts on “wholesale jewelry agreement template What is the GIA diamond grading standard?”
Leave a Comment
You must be logged in to post a comment.
wholesale jewelry agreement template What is the GIA diamond grading standard?
You must be logged in to post a comment.
sterling jewelry wholesale china The classic version of the GIA certificate, mainly includes 7 parts. Let's analyze it separately:
The first part is Gianature Diamond Grading Report, GIA natural diamond grading certificate, including:
Day;
giareport numbergia: Certificate number;
shape and cutting style: diamond -shaped -round and bright, round diamond shape;
: size, that is, the size of the diamond, usually the minimum diameter** minimum diameter* The maximum diameter*full -depth indication (unit: mm).
The second part is Granding Results, grading results, including:
carat weight: carat weight is 1.00ct;
color grade: color level is f; ;
Cut Grade: The cut level is 3EX (perfect cut).
The third part is Grading, additional grading information, including:
polish: the polishing level is EX;
symmetry: symmetry level is EX; n (s): The waist is engraved;
Comments: Remarks, this certificate is intercepted from the GIA official website, so the word "SAMPLE" is marked. Normal GIA certificate is not available. Normal GIA certificate logo and internal characteristics or diamond treatment related information.
The fourth part is the cutting ratio:
The parameter parameters of the diamond, including the ratio of the platform, the height ratio, the waist thickness ratio, the crown corner, the angle of the pavilion, the whole depth, etc.
The fifth part is Clarity, diamond clarity sketch map:
diamond clarity sketch diagram, indicating that diamonds include crystal bags, cloud -shaped objects, needle tips, inner concave primitive crystals, etc.
The sixth part is Granding Scales, hierarchical standards:
The grading system that indicates the color, clarity, and cutting of GIA here.
The seventh part is QR code:
The QR code corresponding to this certificate, scan the QR code to get information about the GIA grading certificate of this diamond.
It to verify the authenticity of the GIA certificate, we can also log in to the GIA official website inquiry.
Belded magic star Mosan diamonds also support GIA classification, and can issue corresponding GIA certificates.
fine jewelry wholesale vendors First, the quality of diamonds is determined by 4C. 4C refers to the weight, color, clarity, and cutting of diamonds.
) Weight: Diamonds are based on carat (CT) as a weight measurement unit. One carat = 100 points, one carat = 0.2 grams, that is, a half -carat diamond is 50 points. The larger the diamond grains, the higher the value.
) Color: Diamonds will participate in some trace elements more or less during the formation process. Due to the different types of trace elements, the color of the diamond will also be different. The international diamond grading system is different, but they gradually agree with the hierarchical standards of the American Jewelry Academy (GIA). In English, the colors of different levels are divided into D, E, F, G, H, I, J, K , L, M, N, less than n.
D color: completely colorless, the highest level in color, and rare.
e color: colorless, only gem appraisal experts can detect trace colors, which is extremely rare.
F color: colorless, only gem appraisal experts can detect the trace color, but it is still considered a colorless grade and a high -quality diamond.
g-H color: close to colorless, when compared with higher-level diamonds, there is a slight color, but this color-grade diamonds still have high value.
i-j color: close to colorless, mild color can be detected, when compared with higher-level diamonds, there is a slight color.
k-m color: obvious yellowing can be seen, and customers are not recommended to buy.
3) Clearing: The clarity of the diamond refers to the impurities containing the parcels contained inside the diamond. VVS2, VS1, VS2, SI1, SI2, I1, I2, I3
FL: Perfect and flawless, there are no flaws in the inside and outside of the diamond to observe in the diamond ten times, which is extremely rare and precious.
IF: There is no time in the inside. Professionals are flawless inside the diamond to magnify the inside of the mirror, and there are slight flaws on the surface of the diamond.
Vvs1: Extremely micro -flawr level 1, professionals should be carefully observed for one hour to see a single small flaw under the diamond 10 times magnifying glass.
Vvs2: Extremely micro -flawr level 2. Professionals should carefully observe one hour before they can see a few small flaws under the diamonds.
VS1: Micro flawr level 1, professionals should be carefully observed for 20 minutes to see a single small flaw under the diamond 10 times to magnify the mirror.
vs2: Micro flawr level 2, professionals should be carefully observed for 20 minutes to see several small flaws under ten times the diamond.
SI1: Level 1 in a small time. Professionals can easily observe small flaws under ten times the diamonds.
SI2: Level 2 in a small time. Professionals can easily observe multiple small flaws under the diamond ten times magnifying glass.
I1-I3: The naked eye can be visible to the naked eye. It is not recommended to buy.
The above clarification level refers to the classification of diamonds at GIA (American Jewelry College). The clarity segmentation in my country is: FL, IF, VVS1, VVS2, VS1, VS2, SI1, SI2, P1, P2, P3, which are collectively referred to as LC, VVS, VS, SI, P from top to bottom.
4) Cutting: refers to the quality of the diamond cutting process, mainly divided into three parts: cutting (perfect cutting union's shining fire color), polishing (polishing good or bad for diamond brightness, there is a certain amount of diamond brightness, there is a certain amount of diamond brightness. The influence), symmetry (the plane of the diamond should be equal to large symmetry). The following levels are cut, polishing, and symmetrical:
EX = Excel 1
vg = very good is good
g = good :Difference
18k gold plated fashion jewelry wholesale The GIA diamond grading is formulated in accordance with the diamond weight, clarity, color, and cutting. The weight unit is in carats and points, 1 carat = 100 points, the larger the diamond, the higher the value; the clarity is divided into i3 ~ FL, etc. At multiple levels, FL is the highest level. It is generally recommended to buy diamonds above VS2 or higher; the color has D ~ Z multiple levels, D is the highest level. Generally, it is recommended to buy diamonds above H level. If you do n’t know much about the diamond 4C standard, it is recommended to buy it from the brand dealer with a high cost -effectiveness such as Blue Nile, and the quality of diamond quality, so as not to buy a poor quality diamond.