Diamond Ratings And Quality – The Definitive Guide (2023)

Diamond Ratings And Quality – The Definitive Guide (1)

For most guys, buying a diamond engagement ring is an extremely stressful (and challenging) process to go through when planning a proposal. Can you imagine being hassled by a pushy salesperson who’s trying to hard sell you a $7,000 diamond ring while you are trying to determine the quality of the diamond with a level head?

It’s not easy and not a fun situation to be in especially when thousands of dollars are at stake.

Speaking from personal experiences, I can definitely empathize with many of suchencounters. You see, the average person won’t have the necessary experience when it comes to choosing a diamond of good quality.

Make no mistake: Shopping for a high quality diamond is much more complicated than what youthink.

If you blindly believe what a jeweler tells you about a diamond’s quality or depend solely on the ratings indicated bya grading report without performing due diligence, you are simply rolling the dice and praying for the best outcome when you make a purchase.

If you don’t want to get ripped off by an unethical jeweler or want to get the best value for your money, understanding diamond ratings and diamond quality charts (4cs) are a fundamental requirement.

And here are the five most important things you’ll learn about in this post.

1. Understanding Diamond Ratings – The 4Cs
2. Diamond Quality Charts And Rating Scales
3. How to Determine Diamond Quality?
4. What is the Best Diamond Quality?
5. What to Look For in a Diamond
6. Beyond4Cs.com’s Recommended Diamond Specs

Understanding Diamond Ratings – The 4Cs of Cut, Color, Clarity & Carat

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In the industry, the quality of diamonds is determined by a culmination of factors like Cut, Color, Clarity and Carat. For people whonew to diamond ring shopping, things canquicklyget complicated.

How do you make sense oftechnical jargon like diamond clarity ratings, color grading scales, cut grading systems and categorization charts?

To prevent information overload,I’ve curated the best resources to help you understand the 4Cs in a succinct manner.

All you need to do is to invest 30 minutes of your time into reading them and I guarantee youwillbe more knowledgeable than 90% of jewelry salespeople out there.

* Important Readings:

(Video) How to Choose a Diamond: Four-Minute GIA Diamond Grading Guide by GIA

Cut Quality: Why It’s the Most Important Diamond Specificationto Look Out ForColor: Explanation of the Color Scale And aComparison Test You Can DoClarity: What the Different Diamond ClassificationAnd Charts Mean to a ConsumerCarat Weight: Size Matters And How You Can Use It to Save Money!

If you are looking for a jeweler who goesgo above and beyond to give you the best shopping experience possible, I highly recommendWhite Flash,James Allenand Brian Gavin.

Diamond Quality Charts And Rating Scales Illustrated

For people who are in a time crunch, here’s a summary of the diamond rating scales and charts for your convenience.

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A well cut diamond hasbetter light return which results in better sparkle and brilliance.

Diamond Ratings And Quality – The Definitive Guide (4)

Classification of diamond color on a D (colorless) – Z (tinted) scale.

Diamond Ratings And Quality – The Definitive Guide (5)

Clarity is an aspect that depicts the presence of inclusions and flaws in the diamond.

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Carat weight is a measure of how heavy the diamond is and not necessarily how large it appears to be.

I stronglyencourage you to read and understand the resources listed in the section above. Byspending only 30 minutes of your time, it can potentially save you thousands of dollars froma bad purchase.

How to Determine Diamond Quality?

As a consumer, you will need to rely on a neutral 3rd party grading certificate to provideyou with an accurate assessment of the diamond’s quality. Currently, there are only 2 reliable gemological institutes that does this with consistent and reliable standards: GIA and AGS.

Now, I want you to repeat this after me: “I will ONLY buy a diamond that’s graded by GIA or AGS.

Getthis statement etched into your brain because you will likely come across jewelers who offer in-house certificates or show you a report from a dubious gemological lab. Very often, they tout it to be as good as the ones issued by GIA/AGS.

They aren’t.

(Video) Diamond Clarity (Part 1) - Quality and Price Comparison - 6 Pro Tips of Do & Don't

Unethical jewelers oftenmarket their “inhouse” certificates to be impartial and to be “as good as” GIA’s. This is donetorip off uneducated consumers through themisrepresentation of diamond quality.


Differences Between Gemological Labs And Grading Certificates – Who Should You AvoidDon’t Be a Victim of Grade Bumping Scams When Shopping For an Engagement RingThink You Are Getting a Great Deal With Cheap or Wholesale Diamonds? You Better Think Again.

What is the Best Diamond Quality?

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Using the GIA grading scale, the best diamond quality that you can get is a D color, Flawless clarity diamond with Excellent cut quality. In conjunction with these ratings, the symmetry and polish grades should both be Excellent as well.

In the market, most people have a misconception that fluorescence is a defect and they prefer diamonds that do not fluoresce. This would be listed in the grading report under the Fluorescence heading as “None” or “Negligible”.

* If you are buying a diamond with an AGS certificate, the cut quality terminology that is used would be different from GIA’s. Instead of excellent ratings, the best diamond quality for AGS would be listed as “Ideal”.

What toLook For in a Diamond?

I often get asked questions like “What is the highest quality diamond I can get for $x,xxx?” or “What arethe best diamond specifications I should consider for a pair of earrings?”.

Well, myanswer is:it depends on your personal preferences and objectives.

Technically speaking, the best ratings a diamond can achieve in terms of its material properties are: D color and flawless. These diamonds are extremely rare and commandan excessively high premium in their prices.

Whether buying a diamond with the “best qualities” is worth it for consumer jewelryis a topic up for debate.

Personally, I like the idea of getting the “perfect” diamond if I have lots of disposable cash lying around. However, the practical side of me is saying “what’s the point of paying more when I can get an identical-looking diamond for an engagement ring at lower prices”.

In my opinion, cut quality should be the number 1 priority regardless of the jewelry’s purpose and this makes it a fixed factor in all scenarios. Once the other factors of color and clarity have been decided, you can easily decide on the largest corresponding carat size that fits into your budget.


What is the Best Diamond Clarity Rating You Should ConsiderDo You Know What’s the Average Size of Diamonds That Others Are Buying?Determining the Best Color Specifications For Your Engagement RingHow Much Should You Spend to Buy a Proposal Ring?

If you are looking for high quality diamond engagement rings that will last for a lifetime, I highly recommend the following vendors: James Allen, White Flash and Brian Gavin.

(Video) Diamond Clarity Comparison VS1 vs VS2 SI1 SI2 VVS1 VVS2 I1 IF I2 I3 FL Ring Chart Explained Scale SI

Beyond4Cs.com’sRecommended Diamond Specs

Depending on your goals and objectives of buying a diamond, you will probably havedifferent requirements in the purchase.

To help you out, I’ve compiled a list of guidelines to give you a better idea of what to look out for and where you can beginshopping immediately.

For diamond engagement rings, the general specifications I would recommend are: F-G color, eyeclean VS2-SI1 clarity. This combination of factors will enable you to finda diamond that faces up white and get better value for your money.

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Recommended Links:

James Allen: Access100,000+ Certified Conflict-Free Diamonds in 360° HD Videos
White Flash: Diamonds With Ideal Light Performance And Cut Quality

For people who are purchasing rings for symbolic reasons of love and purity, the specifications I would recommend are: D-F color and IF clarity.

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Recommended Links:

Click Here to BrowseHundreds of Internally Flawless Diamonds at James Allen!Blue Nile: A Bespoke Jeweler Offering Some of the Largest Selections of D/IF Diamonds

For vintage style engagement rings, the specifications I would recommend are: I-K color, eyeclean VS2-SI1 clarity. It’s generally OK to go down lower in color rating because awarmer tint will enhance the appearance of a vintagediamond ring.

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Recommended Links:

A Comprehensive Guide toOld Mine Cut Diamonds (Vintage Cushion Shapes)
Where to Find Old European Cut Diamonds With Ideal Cut Quality
Best Designs for Vintage Diamond Engagement Rings to Consider

For bargain hunters and people with lower budgets for diamond rings, the specifications I would recommend are: I-K color, eyeclean SI2 – I1 clarity. At thislower end of the spectrum, you have to be realistic about what your budget can get you and be willing to compromise on some aspects of the 4Cs.

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(Video) A guide to diamond grading. How do the 4c's actually affect a diamonds appearance?

Recommended Links:

Click Here to Browse For Diamonds UsingMagnified Videos to Cherry Pick the Best StoneBlue Nile Offers Extremely Competitive Pricing For Loose Diamonds

For necklaces and earrings, you can safely go lowerin color and clarity becausethe viewing distances are much further away. The recommended diamond specs would be: H-J color, eyeclean SI1-SI2.

Diamond Ratings And Quality – The Definitive Guide (12)

Recommended Links:

Examine 1000s of H-J Color Diamonds Upclose Easily With Magnified Videos
Click Here to Browse Through Matching Diamonds for a Pair of Earrings

For investment grade diamonds, you should be consideringfancy colored diamonds (e.g. pink, red) or white diamonds with extremely large carat sizes (>10.0 carats) and high clarity grades (IF or FL).

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Recommended Links:

Sotheby’s Auctions for Fine Jewelry And Diamonds

Finally, I need to reemphasize that the guidelines above are not hard and fast rules. It is meant as a quick reference for you to assess and see the type of quality that are typically used for various applications.

So, I hope this article has provided you with an insight to diamond quality and what the various ratings mean.

Which kind of shopping category do you fall into and what are the qualities you personally look at when buying a diamond? Do leave a comment to let me know as I love hearing from readers!

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1. How to Choose a Diamond: 10-Minute GIA Diamond Grading Guide by GIA
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2. Should you buy a Lab Grown Diamond? | 2ct Lab Grown vs Natural Diamond Comparison | Ultimate Guide
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3. 4Cs of Diamond Quality: Diamond Clarity Grading by GIA
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4. Diamond Shopping 101- Diamond Buying Guide on how to buy diamonds online.
(That Guy Osiris)
5. #01.1 Diamond Chart Explained. Buying a Diamond - Your Essential Guide
6. Diamond Color Buying Guide: Comparing color & 3 tips to save you money on your engagement ring
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