Not all sellers provide diamond grading lab stories (aka diamond quality reviews) to their customers. So my basic guidance to you is to hold your money in your pocket when working with these kinds of jewelers.

Only purchase a diamond engagement ring if it comes with the unique diamond good quality report.

A lab report is an impartial analysis of the 4Cs of a unfastened diamond and involves a plotted diagram of the stone’s clarity qualities and a graphic illustration of the stone’s proportions. Possessing this sort of a report permits you to evaluate diamonds of different attributes and ultimately will help you make a far more educated purchasing choice.

A retailer may minimize corners and not offer a lab report or an unscrupulous seller may possibly offer a bogus a single because of the time, trouble and expense he’ll bear to receiving a stone graded.

Yeah – there is a value for grading a diamond (however that expense is eventually paid out by the buyer), in addition the shipping and insurance policy costs for sending the diamond to the lab. And permit us not fail to remember the possibility expense of a jeweler not obtaining the diamond in his retailer for sale for a handful of weeks whilst the grading requires area.

Nonetheless, a diamond grading report might also not be accessible since the fees to getting 1 could effect way too seriously on the final value of the ring.

For example, a .3ct diamond ring costing $250 say, might price about $75 to be graded and have the report amount inscribed on the girdle on the diamond.

As you lookup for that ideal diamond engagement ring for your sweetheart, you will discover that there is an alphabet soup of labs claiming to offer reputable diamond grading reviews. But I would only place my money on…

The Leading Diamond Grading Lab Reports

Of course, all diamond good quality studies are not developed equivalent. Within the sector, it is a consensus that the two leading labs are GIA-GTL (Gemological Institute of America’s Gem Trade Lab) and the AGS (American Gem Modern society Laboratories).

The GCAL (Gem Certification and Assurance Lab) also delivers very regarded reports or “diamond certificates” as they are referred to by GCAL.

The GIA has the strongest global track record for independence and consistency. Owing to their continual coloration and clarity strictness suggestions, the globe’s premier and most expensive diamonds have been despatched there for grading many years. In 2006, GIA-GTL additional a two-dimensional minimize grading method for spherical outstanding diamonds.

AGS makes use of the strictest cut expectations in the industry. It makes use of a three-dimensional gentle functionality metric that can grade a number of diamond designs. In truth, it is the only minimize grading technique that is identified by the scientific community.

What is a lot more, its Diamond Top quality Document utilizes a distinctive and proprietary to ten grading method to consider the 4 Cs – a program which is simpler to comprehend than GIA’s grading program. In simple fact, AGS even goes the additional action by equating their -10 ranking scale to other types of score.

For example, the conventional VS1 diamond clarity rating is a 3 on the AGS Diamond High quality Document.

Diamond Reporting – The Downsides

1. Diamond grading is not standardized or controlled and hence you may possibly appear throughout tier two labs that make use of looser tips to the tier 1 grading labs pointed out earlier mentioned.

If you acquire a diamond that has been graded by a tier 2 lab, you may stop up spending a lot more for a lesser high quality diamond. So for example, a diamond rated a “F” in color at a tier 2 lab could get a G, H, or lower coloration ranking at a far more trustworthy lab.

The sector also reductions diamonds graded by lesser recognized labs by about 15-thirty% or much more. So either you only acquire a diamond graded by a tier 1 lab or you settle for that you may possibly be buying a lesser top quality diamond than what is mentioned on the report if that diamond is graded by a lesser identified lab.

2. Several huge chain stores have massive contracts with lesser known labs with “softer” diamond grading tips. Some of these softer labs place “advised replacement values” on the lab reports – values which are increased than what stores intends sell the diamonds for.

So a salesperson in a chain retailer could say to you, “Seem at the fantastic deal you are getting right here. We are offering you this diamond engagement ring for $2500 but the report claims that the recommended replacement value is $4000.” Wow – what a offer – NOT! This is why it is better that you believe in only impartial tier one labs.

Also bear in head that trustworthy diamond grading reports are not appraisals and do not supply appraisal figures. Diamond appraisals are often grossly inflated and are not something you may want to depend on.

three. Diamond studies are riddled with disclaimers that specify that nothing is “licensed” or confirmed and that the labs are not accountable for errors. In truth, the GIA provides a disclaimer of kinds on their web site concerning the use of the phrase “certify.” The web site claims:

“It is incorrect to state that college students, graduates, their firms, or certain gemstones are “certified” by GIA. The Gemological Institute of The united states does not certify any individual or everything. Neither a scholar nor a graduate who has been awarded a certificate or diploma, nor a gem which has been graded or discovered by GIA has been qualified by GIA”.

So it is feasible that you the customer is left keeping the bag must an inaccuracy in a report is afterwards uncovered. Courts have often dominated that sellers, not labs, are accountable for this sort of mistakes. Why? Due to the fact the labs indicated beforehand that their reports couldn’t be held liable.

Fortunately, there are a few ways to give oneself a lot more buyer protection:

A. You could fly to India where jewelers supply a life span buyback coverage to their clients. Way too pricey to fly?

B. You could uncover 1 of the 20% of US jewelers who promote totally bonded diamonds. These are diamonds that are sold with lifetime breakage, life time trade-in and lifetime buyback policies.

C. Not as good a solution as acquiring a fully bonded diamond but you could get a diamond that arrives with an genuine “certificate” and not a report. “Certified diamonds do appear with guaranties” albeit for shorter durations.


Some sellers refer to a “diamond report” as a “certified diamond” but technically this is not right. From a lawful standpoint, a diamond report is a merely an professional opinion however in actuality, aspects of a diamond grading report are not just viewpoints.

For example, a diamond’s carat (excess weight) can be accurately identified as well as its reduce quality by measuring its optical effectiveness or by referring to a laptop design. A certification on the other hand is a assertion of truth – a doc for which the issuer accepts lawful accountability and will make restitution to the consumer for errors.

Some top diamond grading labs offer each reports and certificates. AGS offers Diamond Good quality Paperwork (non-accredited reports) and also Diamond High quality Certificates. 求婚鑽石 are geared up exclusively for AGS retail jewelers and provides guaranties from participating American Gem Society member retailers.

GCAL certifies it’s diamond grading also. Its a hundred% income-back again guarantee coverage is valid for a period of time of two a long time from the date on the applicable certification. This plan guarantees the precision of the cut, color and clarity grades and the carat excess weight.

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

Elements Of A Diamond Grading Report

Diamond grading reviews are usually evolving but particular component ought to remain the exact same. For occasion, the:

The Report #. This number is presented and recorded in a lab’s file and may possibly or may not be inscribed on a diamond’s girdle. You can enter the report number on a grading lab’s site to check the authenticity of the diamond good quality report or to get a lot more details about the diamond.

Condition & Side Design: This is the define and the slicing type utilized for the side arrangement. There are three fundamental side variations – “amazing cut, step cut and mixed slicing fashion” and 12 fundamental designs which incorporate notables this kind of as round brilliant and princess cut” diamonds.

Measurements: This refers to dimensions (not fat) of a diamond. Dimension includes dimensions this sort of as size, width, fat and diameter. A measurement is usually outlined to the hundredth of a millimeter. Measurements engage in a massive role in how a diamond sparkles.

Carat Fat: The bodyweight of a diamond is calculated to the hundredth of a carat and some even offer these kinds of evaluate to the thousandth of a carat (one.123ct.). Carat is the most goal and the least difficult to understand of the 4Cs since all 1 has to do is bodyweight the stone.

Colour Grade: This tells you the degree of shade absence in the diamond. The significantly less color the increased the quality.

Diamonds are generally graded from D-Z the nearer to “D” the whiter the diamond. You ought to in no way see diamond shade variety this sort of as (G-H, I-J-K, and so on) on a diamond report. You need to only see coloration ranges on appraisals for stones that are mounted.

Clarity Quality: Nearly every single diamond has internal imperfections named inclusions and exterior imperfections named blemishes. A diamond is graded in accordance to the dimension, type, location and quantity of these flaws.

Clarity grades range from Flawless (FL) – Incorporated. Labs use a couple professionals to grade the clarity of a diamond in get to arrive up with a far more correct reading through.

Minimize Grade: A lot more modern diamond studies include a cut grade for normal round excellent diamonds. Cut takes into thing to consider the brilliance, fire and scintillation of the diamond. Cut grade ranges from Outstanding – Bad.

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