April 18, 2021

Jewellery and Gems The Buying Manual: Diamond Grading Report

Nowadays, few fine diamonds over a single carat are sold without a diamond grading report, or certificate, as they can also be called, from a respected laboratory. Reviews issued by the GIA/Gem trade laboratory are most widely used in the United States and many countries around world.
A grading review does more than clarify the stone’s genuineness, it fully describes the stone and evaluate each of the important factors affecting quality, beauty, and value. Grading reports can be very useful for a variety of reasons. The information they include can provide verification of the “facts” since represented by the seller and allow one to make a safer decision when purchasing a diamond. Another, important functionality of reports is to verify the particular identity of a specific diamond a few future time, if, for example , it has been out of one’s possession for any reason. For insurance purposes, the information provided on the report will help ensure replacement of a lost or stolen gemstone with one that is truly “compatible quality. ”

Reports are not necessary for each diamond, and many beautiful diamonds utilized in jewelry are sold without them. But when considering the purchase of a very fine diamond weighting one carat or even more, we strongly recommend that the diamond end up being accompanied by a report, even if it means having a diamond removed from its setting (no reputable lab will issue a report on a mounted diamond), and then reset. If you are considering a diamond that will lacks a report, it is easy for your jeweler to obtain one. Or, since GIA is issuing diamond grading reports to the public, you may publish a diamond at GIA yourself.

Do not rely on the report only

The availability and widespread use of diamond grading reports can, when properly understood, enable even those without professional skills to make valid evaluations between several stones, and thus create more informed buying decisions. Reports can be an important tool to help you understand differences affecting price. But we must caution you not to let them hinder what you like or really want. Remember, some diamonds are very beautiful even though indicate adhere to establish standards. In the final analysis, use your own eyes and inquire yourself how you like the stone.

A customer who was trying to decide between a number of diamonds. Her husband wanted to buy her the stone with the greatest report, but she preferred an additional stone which, according to what was on the reports, wasn’t as good. They choose against the best diamond and bought the one that made her happiest. The important thing is that they knew exactly what they were purchasing, and paid an appropriate price for the specific combination of quality factors. Basically, they made an informed choice. The reports gave them assurance as to the facts, and greater confidence that they knew what they were really comparing.

Improper use of reports can lead to expensive mistakes

As important s diamond grading reports can be, they can become misused and lead to erroneous results and costly mistakes.
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The key in order to being able to rely on a diamond record, and having confidence in your decision, lies in knowing how to read it properly. For example , when trying to decide between two diamonds accompanied by diamond grading reports, buyers all too often make a decision by comparing just two factors examined on the reports, color and clarity, and think they have made a sound decision. This is rarely the case. No one can make a sound decision based on colour and clarity alone. In fact , whenever significant price differences exists in between two stones of the same color and clarity as the more expensive stone, and often it is not the better value. Getting the same color and clarity is only part of the total picture. Differences in cost indicates differences in quality, differences you might not see or understand. With round diamonds, the information you need is in the report, but you need to understand what all the information means before you can make valid comparisons.

A word of caution: Never make a purchase relying solely on any kind of report without making sure the statement matches the diamond, and that the particular diamond is still in the same condition described. Always seek a professional gemologist, gemologist-appraiser, or gem-testing laboratory to verify that the stone accompanying report can be, in fact , the stone described right now there, and that the stone is still in the same condition indicated on the statement. There are instances where a report continues to be accidentally sent with the wrong rock. And, in some cases, deliberate fraud is definitely involved.

How to read a diamond grading report

Check the date released. It is very important to check the date within the report. It’s always possible that the diamond has been damaged since the report has been issued. This sometimes occurs along with diamonds sold at auction. Since precious gems can become chipped or cracked with wear, one must always check them. For instance , you might see a diamond accompanied by a report describing it as D – Flawless. If this stone were badly chipped after the report was issued, however , the clarity grade can easily drop to VVS, and in some cases, much lower. Needless to say, in such a case value will be dramatically reduced.

Who issued the particular report? Check the name of the laboratory issuing the report. Is the survey from a laboratory that is known and respected? If not, the information on the survey may not be reliable. Several well-respected laboratories issue reports on diamonds. The very best known in the United States include the Gemological Start of America Gem Trade Lab (GIA/GTL or GIA), and the Us Gemological Laboratories (AGL). Respected Western european labs issuing reports include the Belgian Diamond High Council (HRD). No matter which report you are reading, most will provide similar information, including:

Identity of the stone. This verifies the fact that stone is a diamond. Some diamond reports don’t make a specific declaration about identity because they are called diamond reports and are only issued regarding genuine diamonds. If the report is not called a “diamond grading report” then there must be a statement attesting that it is genuine diamond.

Weight. The precise carat weight must be given.

Sizes. Any diamond, of any form, should be measured and the dimensions documented as a means of identification, especially for insurance/identification purposes. The dimensions given on the diamond report are very prices and supply information that is important for several reasons. First, the dimensions can help you determine that the diamond being examined can be, in fact , the same diamond described in the report, since the likelihood of having two diamonds with exactly the same carat excess weight and millimeter dimensions is remote. Second, if the diamond has been broken and re-cut since the report has been issued, the millimeter dimensions might provide a clue that something continues to be altered, which might affect the carat weight as well. Any discrepancy between the sizing that you or your jeweler get by measuring the stone, and those offered on the report, should be a red flag to check the stone very carefully.

Finally, the particular dimensions on the report also inform you whether the stone is round or out of round. Out of round gemstones sell for less than those that are more completely round.

Fine diamonds are “well-rounded”.

The diamond’s roundness will influence value, so it is determined very carefully through measurements of the stone’s diameter, gauged at several points around round the circumference. For a round diamond, the report will usually give two diameters, measured in millimeters and mentioned to the hundredth: for example , 6. fifty-one rather than 6. 5; or six. 07 rather than 6. 0. These types of indicate the highest and lowest size. Diamonds are very rarely perfectly round, which is why most diamond reports may show two measurements. recognizing the rarity of truly round diamond jewelry, some deviation is permitted, as well as the stone will not be considered “out of round” unless it deviates by more than the established norm, around 0. 10 millimeter in a 1 carat stone. In an one carat diamond, if the difference is 0. 10 or less, then the rock is considered “round. ” If the difference is greater, it is “out-of-round. “

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