PT950= platinum purity 95%
When buying diamonds, we should not only pay attention to the weight of diamonds, but also pay attention to the color, clarity and cut of diamonds.
Choosing a diamond depends on the 4 "C" of the diamond.
Clara: This is the most important factor in buying diamonds. One carat equals 0.2g, and 1 carat can be divided into 100 points. Generally speaking, a single diamond of 30 to 40 cents is a common choice, which can not only express love but also be accepted by people of the general income class. If economic conditions permit, it is best to choose diamonds with a value of more than 50 points that can preserve and increase the value.
Cutting: The quality of cutting directly determines whether a diamond is dazzling, and a diamond with excellent cutting can also reflect brilliant light in a slight light. The quality of cutting can determine 40% of the "value" of diamonds.
Cleanliness: Whether there are impurities in diamonds, it is more appropriate for consumers to choose VS grade (micro-flaw) and VVS grade (micro-flaw).
Color: Diamonds are generally divided into three grades: colorless, white and light yellow-white, but there are also quite rare blue, black and light red diamonds. Except for diamonds with special colors, the color of diamonds should be as colorless as possible.
A beautiful diamond ring can prove sweet love. So what kind of diamond ring is suitable?
A single diamond ring of 30 or 40 cents is a common choice, which can not only express love, but also be accepted by people in the general income class. If economic conditions permit, it is best to choose diamonds with a score of more than 50, because diamonds with a score of more than 50 are more capable of maintaining and increasing value. When buying diamond ornaments, we should not only pay attention to the weight of diamonds, but also pay attention to the color, clarity and cutting of diamonds, that is, the "4c" standard should be considered comprehensively. Diamonds with large weight, good cutting (bright light), few pure defects and white color are good diamonds. When buying diamond jewelry with a score of 40 or more, don't forget to ask the merchant to show the diamond appraisal certificate. In addition, it is suggested that when you buy a diamond ring, you'd better buy earrings and pendants that can match it, so as to avoid the improper matching of the bride's jewelry and leave regrets. Similarly, it is very appropriate for the bride to give the groom a diamond ring as a token. Generally, it is appropriate to use a platinum diamond ring, which is simple and generous, gorgeous and unobtrusive, and properly shows the good taste of the owner. In addition, it is also very good to choose a bracelet with exquisite workmanship for my husband, which is both luxurious and practical.
Buying jewelry is a compulsory course for women. Professionals remind that carefully distinguishing the logo, appearance and weight of jewelry is the key to clearly understand consumption.
Logo: The contents include the manufacturer's code, purity, material and weight of main diamond of diamond-encrusted jewelry. Labels and bills should have the name, manufacturer and address, weight and price of the jewelry. For example, platinum products should have the word Pt.
Appearance quality: the surface is smooth, and there are no traces such as filing, scraping and hammering. The edges and sharp corners shall be smooth and free from burrs. The surface color is consistent, bright and free from water stains; Accurate imprint, etc.
Jewelry weight: Jewelry weight is one of the important indicators. The allowable difference of platinum jewelry is 0.01g; The tolerance of each gold ornament is 0.01g; The tolerance of silver jewelry is +0.04g and-0.05g. ..
Diamond quality certificate
Diamond jewelry is equipped with an appraisal certificate issued by an authoritative national appraisal institution.
Certificate of China Gemstone Association
GIA certificate from American Gemological Institute
GIA Gemological Institute of America is the founder of internationalizing the diamond appraisal certificate. GIA is a non-profit organization, and its funds are donated by people in the jewelry industry. Its main service scope is the education and research of jewelry design and professional knowledge, which is deeply recognized by the global jewelry industry.
Since GIA does not involve for-profit business, the appraisal result will not be affected by human factors under the premise of reputation first, and the contents of the appraisal book are not "flexible" and there will never be a "forbidden area". Therefore, as far as the quality of the appraisal book is concerned, it has great credibility.
HRD certificate Hoge RaadVoor diamond
HRD is Belgium's "Hoge Raad Voor Diamond". The International Diamond Council (IDC) negotiates the international diamond grading standard of HRD, and the HRD Diamond Appraisal Center conducts appraisal according to the IDC Rules.
HRD certificate not only describes the shape, circumference and weight of the diamond, but also makes a more detailed measurement report on the cut ratio, which is recorded on the certificate, such as table, waist thickness and crown height (Cr. Height) and pavilion depth.
In this way, it is easier to check the authenticity of certificates and diamonds. The digital records in the HRD certificate are affixed with transparent mesh tape to prevent alteration, and the internal or external features in the certificate and wrapping paper are affixed with clear charts and detailed marks. The HRD system uses a microscope to measure the contents, and the clarity grade is based on the comparison between the measurement results and the HRD clarity grading table. Except for LC (magnifying glass cleaning) and P, the grade code is the same as GIA.
In the international gem industry, there are four mainstream appraisal system standards.
They are G.I.A.H.R.D.I.G.I. and E.G.L Among them, the former two (American Gemological Institute and Belgian Gemological Association) have the strictest and authoritative diamond grading standards. Holders of carat diamonds with the above two certificates can easily obtain mortgage loans from banks in developed countries. In addition to the international diamond appraisal certificate, the domestic diamond appraisal started several decades later than that in Europe and America, but it developed rapidly. At present, there are 6 jewelry testing institutions certified by the State Bureau of Quality and Technical Supervision, namely National Jewelry Appraisal Center, Gemological Appraisal Center of China Gemological Association, National Jewelry Appraisal Center, Gemological Appraisal Center of Peking University, Gemological Appraisal Institute of Gaode and Gemological Appraisal Center of China Geo University. The authoritative appraisal rule of diamond ornaments is the Classification Rules for Inlaid Diamonds, and the patterns are classified in full accordance with the internationally accepted 4C standard (i.e. color, clarity, cut and weight).