Not all sellers give diamond grading lab stories (aka diamond good quality reports) to their buyers. So my standard tips to you is to preserve your funds in your pocket when working with these kinds of jewelers.

Only buy a diamond engagement ring if it will come with the authentic diamond high quality report.

A lab report is an impartial evaluation of the 4Cs of a loose diamond and includes a plotted diagram of the stone’s clarity attributes and a graphic representation of the stone’s proportions. Obtaining such a report allows you to evaluate diamonds of distinct characteristics and in the long run aids you make a far more knowledgeable purchasing choice 鑽石.

A retailer might cut corners and not give a lab report or an unscrupulous seller could give a faux one particular because of the time, trouble and expense he’ll bear to acquiring a stone graded.

Yeah – there is a price tag for grading a diamond (although that cost is eventually compensated by the customer), additionally the shipping and delivery and insurance fees for sending the diamond to the lab. And permit us not overlook the possibility expense of a jeweler not obtaining the diamond in his store for sale for a couple of weeks whilst the grading takes location.

Even so, a diamond grading report may possibly also not be accessible simply because the costs to receiving one particular may influence too heavily on the final cost of the ring.

For example, a .3ct diamond ring costing $250 say, may possibly expense close to $75 to be graded and have the report number inscribed on the girdle on the diamond.

As you lookup for that best diamond engagement ring for your sweetheart, you may locate that there is an alphabet soup of labs proclaiming to give reputable diamond grading studies. But I would only set my money on…

The Leading Diamond Grading Lab Stories

Of course, all diamond high quality stories are not created equivalent. In the sector, it is a consensus that the two premier labs are GIA-GTL (Gemological Institute of America’s Gem Trade Lab) and the AGS (American Gem Culture Laboratories).

The GCAL (Gem Certification and Assurance Lab) also gives highly regarded studies or “diamond certificates” as they are referred to by GCAL.

The GIA has the strongest international status for independence and regularity. Because of to their continuous colour and clarity strictness guidelines, the globe’s biggest and most expensive diamonds have been sent there for grading decades. In 2006, GIA-GTL added a two-dimensional minimize grading program for round amazing diamonds.

AGS makes use of the strictest lower expectations in the industry. It utilizes a three-dimensional light performance metric that can grade many diamond styles. In reality, it is the only minimize grading method that is recognized by the scientific neighborhood.

What is a lot more, its Diamond Quality Doc utilizes a distinctive and proprietary to ten grading program to appraise the 4 Cs – a program which is less complicated to comprehend than GIA’s grading method. In simple fact, AGS even goes the extra action by equating their -10 score scale to other types of ranking.

For case in point, the typical VS1 diamond clarity ranking is a three on the AGS Diamond Top quality Document.

Diamond Reporting – The Negatives

one. Diamond grading is not standardized or regulated and therefore you may come throughout tier 2 labs that employ looser tips to the tier 1 grading labs talked about previously mentioned.

If you buy a diamond that has been graded by a tier two lab, you may finish up paying out much more for a lesser high quality diamond. So for example, a diamond rated a “F” in shade at a tier 2 lab may get a G, H, or lower shade rating at a much more reliable lab.

The business also reductions diamonds graded by lesser known labs by about 15-30% or far more. So possibly you only purchase a diamond graded by a tier one lab or you acknowledge that you may be acquiring a lesser top quality diamond than what is said on the report if that diamond is graded by a lesser recognized lab.

2. Many big chain merchants have huge contracts with lesser known labs with “softer” diamond grading guidelines. Some of these softer labs set “suggested alternative values” on the lab studies – values which are greater than what retailers intends sell the diamonds for.

So a salesperson in a chain store might say to you, “Appear at the fantastic deal you are receiving listed here. We are selling you this diamond engagement ring for $2500 but the report says that the suggested replacement worth is $4000.” Wow – what a deal – NOT! This is why it is greater that you have confidence in only unbiased tier one labs.

Also bear in mind that reliable diamond grading reports are not appraisals and do not offer appraisal figures. Diamond appraisals are frequently grossly inflated and are not some thing you’ll want to rely on.

three. Diamond stories are riddled with disclaimers that specify that nothing is “certified” or confirmed and that the labs are not accountable for mistakes. In simple fact, the GIA delivers a disclaimer of types on their web site relating to the use of the term “certify.” The web site claims:

“It is incorrect to point out that college students, graduates, their firms, or certain gemstones are “licensed” by GIA. The Gemological Institute of The usa does not certify any individual or everything. Neither a pupil nor a graduate who has been awarded a certificate or diploma, nor a gem which has been graded or determined by GIA has been certified by GIA”.

So it is achievable that you the client is still left holding the bag need to an inaccuracy in a report is afterwards uncovered. Courts have frequently dominated that sellers, not labs, are accountable for these kinds of problems. Why? Since the labs indicated beforehand that their reports could not be held liable.

Thankfully, there are a pair ways to give yourself far more consumer protection:

A. You could fly to India in which jewelers provide a lifetime buyback coverage to their customers. As well expensive to fly?

B. You could find one of the twenty% of US jewelers who offer completely bonded diamonds. These are diamonds that are offered with lifetime breakage, life time trade-in and lifetime buyback policies.

C. Not as very good a treatment as acquiring a entirely bonded diamond but you could get a diamond that will come with an genuine “certification” and not a report. “Qualified diamonds do arrive with guaranties” albeit for shorter durations.


Some sellers refer to a “diamond report” as a “qualified diamond” but technically this is not proper. From a legal standpoint, a diamond report is a basically an expert viewpoint even though in actuality, facets of a diamond grading report are not just opinions.

For example, a diamond’s carat (bodyweight) can be accurately determined as well as its lower quality by measuring its optical efficiency or by referring to a laptop product. A certificate on the other hand is a statement of truth – a document for which the issuer accepts lawful obligation and will make restitution to the consumer for problems.

Some leading diamond grading labs offer equally reviews and certificates. AGS delivers Diamond High quality Documents (non-certified stories) and also Diamond Quality Certificates. Diamond High quality Certificates are prepared exclusively for AGS retail jewelers and gives guaranties from collaborating American Gem Modern society member shops.

GCAL certifies it’s diamond grading also. Its one hundred% funds-again guarantee plan is legitimate for a time period of two several years from the date on the applicable certificate. . This coverage guarantees the accuracy of the cut, shade and clarity grades and the carat bodyweight.

A report or certification should will have a variety on it that may possibly or may possibly not be inscribed on a diamond. You will be ready to enter that quantity on the site of the certifying lab to check out a report’s validity.

Elements Of A Diamond Grading Report

Diamond grading reports are always evolving but specified element must continue to be the identical. For occasion, the:

The Report #. This number is presented and recorded in a lab’s file and might or might not be inscribed on a diamond’s girdle. You can enter the report quantity on a grading lab’s site to examine the authenticity of the diamond quality report or to get more data about the diamond.

Condition & Facet Design: This is the define and the chopping type employed for the aspect arrangement. There are three standard aspect variations – “outstanding minimize, stage cut and mixed cutting design” and twelve basic styles which contain notables this sort of as round excellent and princess reduce” diamonds.

Measurements: This refers to size (not excess weight) of a diamond. Dimensions contains dimensions this kind of as length, width, excess weight and diameter. A measurement is normally listed to the hundredth of a millimeter. Measurements perform a enormous part in how a diamond sparkles.

Carat Fat: The fat of a diamond is measured to the hundredth of a carat and some even offer these kinds of measure to the thousandth of a carat (1.123ct.). Carat is the most aim and the least difficult to realize of the 4Cs since all a single has to do is bodyweight the stone.

Coloration Grade: This tells you the stage of colour absence in the diamond. The less coloration the greater the grade.

Diamonds are usually graded from D-Z the closer to “D” the whiter the diamond. You ought to never see diamond coloration assortment such as (G-H, I-J-K, and so on) on a diamond report. You ought to only see coloration ranges on appraisals for stones that are mounted.

Clarity Quality: Nearly each diamond has inside imperfections called inclusions and external imperfections called blemishes. A diamond is graded according to the measurement, variety, area and sum of these flaws.

Clarity grades selection from Flawless (FL) – Provided. Labs use a pair authorities to quality the clarity of a diamond in order to come up with a much more correct reading through.

Reduce Quality: More latest diamond stories incorporate a minimize quality for common round outstanding diamonds. Lower will take into thought the brilliance, fireplace and scintillation of the diamond. Lower quality ranges from Outstanding – Poor.