Your Complete Guide for Lab Diamonds with 4Cs: 
Carat, Color, Clarity & Cut

Discover how to choose the perfect lab diamond that truly sparkles and still fits comfortably within your budget. Understanding the 4Cs, Carat, Color, Clarity, and Cut, will help you select a diamond that looks radiant, feels luxurious, and gives you the best value for your investment.

 

At JDF, every lab diamond is carefully selected according to trusted IGI standards to ensure exceptional quality, brilliance, and craftsmanship. We focus on high-grade diamonds so you can enjoy a stunning piece that reflects elegance, confidence, and timeless beauty. Whether you are choosing a meaningful gift or investing in a piece for yourself, we are here to guide you toward a diamond that glows with brilliance and suits your price range perfectly.

All information in this guide is sourced from International Gemological Institute (IGI) standards for lab diamonds.

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1st C: 
Carat Diamond

1st C: Carat Diamond

Carat shows how big and rare a diamond is. Bigger carats usually look more noticeable and cost more, but the cut and shape can make a diamond appear smaller or larger than the number.

 

At JDF, diamonds 1 carat and above come with IGI certificates, so you know the diamond’s quality is checked. Lab grown diamonds follow the same standards. Not sure which carat to choose? Tell us your budget and we’ll help you pick a diamond that looks beautiful and suits your price.

01

What is Ct in a diamond? 
Ct means carat. It tells you how heavy the diamond is.

02

What is carat size and weight? 
Weight is how heavy the diamond is. Size is how big it looks when you wear it.

03

What is the carat scale for diamonds? 
It’s a system to measure a diamond’s weight so you know how rare and valuable it is.

04

How is carat weight measured? 
Diamonds are weighed very carefully on special scales to get the exact carat number.

2nd C: 
Diamond Color

2nd C: Diamond Color

Diamond color affects how bright and sparkly the stone looks. The rarest diamonds are completely colorless, while most have a tiny hint of yellow or brown. Lab grown diamonds follow the same rules and are graded the same way.

 

At JDF, we use only E color diamonds, so the color and quality are top-notch. Not sure which color to pick? Tell us your style and budget, and we’ll help you find a diamond that looks amazing.

01

What is the real color of a diamond? 
Diamonds can be many colors, from colorless to light yellow or brown.

02

What are the grades of diamond color?
Diamonds are graded from D (colorless) to Z (light yellow or brown).

03

Which color of diamond is the best?
D is the rarest and most colorless, but the best color depends on your style and taste.

04

What causes color in diamonds?
Tiny elements like chemical or the way the diamond is made can give it a little color.

3rd C: Diamond Clarity

3rd C: 
Diamond Clarity

Diamond clarity tells you how clear a diamond looks. All diamonds have tiny marks called inclusions (inside) or blemishes (outside). The fewer and smaller these are, the cleaner and more sparkly the diamond appears.

 

At JDF, we use only VVS1 and VVS2 diamonds, so your stone is very clear and beautiful. Lab grown diamonds are graded the same way using IGI standards.

01

Which diamond clarity is best? 
VVS1 and VVS2 diamonds are very clear, with only tiny marks that are almost impossible to see.

02

What are the clarity grades?
From highest to lowest: Flawless (F), Internally Flawless (IF), Very Very Slightly Included (VVS), Very Slightly Included (VS), and Slightly Included (SI).

What are the clarity grades?
From highest to lowest: 
Flawless (F), 
Internally Flawless (IF), 
Very Very Slightly Included (VVS), 
Very Slightly Included (VS), and 
Slightly Included (SI).

03

Is VS clarity okay?
VS is still good, but JDF focuses on VVS diamonds for the best sparkle.

04

Does clarity affect price?
Yes, the clearer the diamond, the more valuable it is.

4th C: 
Diamond Cut

4th C: Diamond Cut

Diamond cut is all about how a diamond reflects light. A well-cut diamond sparkles, shines, and shows flashes of color when it moves. The better the cut, the brighter and more lively the diamond looks.

 

At JDF, we use Round Cut diamonds with Triple Excellent cut, so your stone catches light beautifully and sparkles from every angle. Lab grown diamonds are graded the same way with IGI standards.

01

What is the best cut for a diamond? 
Round Brilliant diamonds cut sparkle the most and reflect the most light.

02

How many cuts are there in a diamond?
“Cut” refers to how the diamond is shaped to shine. 

What are the clarity grades?
From highest to lowest: 
Flawless (F), 
Internally Flawless (IF), 
Very Very Slightly Included (VVS), 
Very Slightly Included (VS), and 
Slightly Included (SI).

03

What is a full cut diamond?
A full cut has 57–58 facets, making it shine brighter.

04

Is diamond cut important?
Yes! A good cut makes the diamond look lively and sparkling.

Ready to Learn More?

Explore our educational resources or get in touch with questions about IGI certified lab-grown diamonds.