If the place you are looking for does not have a certificate of rough diamonds or a certificate of finished products, don't go there to buy them. If you don't feel comfortable buying it, you don't have to consider it.
If you want to buy it, you can also buy good diamonds at 6000-8000. Pay attention to the place is:
First: you can buy diamonds with GIA certificate at this price. It depends on whether the waist size of this diamond is consistent with GIA certificate. If it is consistent, this diamond will not be fake, because a fake diamond like this will be more expensive than the real one.
Second: Look at some descriptions on the GIA certificate. Do they contain the following descriptions: caves, beards, bruises, fragments and feathers?
According to the above description, this diamond is problematic and not worth much. The following is a translation of the above description:
Hole: A large and deep opening.
Bearded waistline (bearded waistline): The waistline causes tiny feathered cracks, which extend inward in the process of rounding.
Bump (bruise): A split crack appears when the surface is hit.
Chip: usually a small and shallow opening, usually at the waist edge (sometimes very large)
Pinnate crack: a crack caused by extrusion or splitting, usually with a white or pinnate appearance.
Third, it depends on whether the diamond has black spots, how big the black spots are and where the black spots are. If it is in. Also known as BLK and tuberculosis. If there are black spots in it and the black spots are on the table, the price will be much lower. (PS: Diamonds mainly look at 4C, but also at BLK and TB mentioned here. )
Fourth: after the finished product is finished, the merchant will have the domestic certificate of finished product. See if this certificate is similar to the data on GIA. It is normal that some drills will be tested one level lower than GIA in China. If it is lower by two or more, it can be regarded as abnormal.