The Diamond Size Chart Describes What Would Be the Exact Mm Size of The Diamond. It Helps when Choosing a Specific Cut and Carat Weight Diamond. Natural Diamond Size Chart Is a Great Tool to Determine the Size of The Center Stone and Side Stones. It Also Helps in Determining the Approx Value of The Diamonds. Most Jewelers, Designers, and Even Retailers in The Diamond and Jewelry Industry Pay Close Attention to Diamond Size Charts While Diamond Jewelry.
What is the main reason? We only source what is needed. When we know the exact mm size that will go into making the jewelry design, it is important to have diamonds that are an exact size, so that the diamond is not too loose and doesn't pop out. It also helps in reducing your sourcing need - instead of buying the whole packet, you know only what size you need. In order to check the diamond quality, you should go through the diamond 4Cs scale.









Round Diamond Sizes
| Round MM Size | Round Weight (ct) | Black Diamond ct weight (Approx) | Round MM Size | Round Weight (ct) | Black Diamond ct weight (Approx) | |
|---|---|---|---|---|---|---|
| 0.8 mm. | 0.00 | 0.00 | 7 mm. | 1.30 | 1.90 | |
| 1 mm. | 0.01 | 0.01 | 7.3 mm. | 1.50 | 2.10 | |
| 1.1 mm. | 0.01 | 0.01 | 7.5 mm. | 1.67 | 2.40 | |
| 1.2 mm. | 0.01 | 0.01 | 7.75 mm. | 1.75 | 2.50 | |
| 1.25 mm. | 0.01 | 0.01 | 8 mm. | 2.00 | 2.80 | |
| 1.3 mm. | 0.01 | 0.01 | 8.25 mm. | 2.11 | 3.00 | |
| 1.5 mm. | 0.02 | 0.02 | 8.5 mm. | 2.43 | 3.50 | |
| 1.75 mm. | 0.02 | 0.02 | 8.7 mm. | 2.50 | 3.50 | |
| 1.8 mm. | 0.03 | 0.03 | 9 mm. | 2.75 | 3.90 | |
| 2 mm. | 0.03 | 0.04 | 9.1 mm. | 3.00 | 4.20 | |
| 2.2 mm. | 0.04 | 0.05 | 9.5 mm. | 3.35 | 4.70 | |
| 2.5 mm. | 0.06 | 0.07 | 9.75 mm. | 3.61 | 5.10 | |
| 2.75 mm. | 0.08 | 0.10 | 10 mm. | 3.87 | 5.50 | |
| 3 mm. | 0.10 | 0.12 | 10.25 mm. | 4.57 | 6.00 | |
| 3.25 mm. | 0.14 | 0.17 | 11 mm. | 4.91 | 6.40 | |
| 3.5 mm. | 0.17 | 0.20 | 11.25 mm. | 5.49 | 7.20 | |
| 3.75 mm. | 0.21 | 0.25 | 11.50 mm. | 5.85 | 7.70 | |
| 4 mm. | 0.25 | 0.33 | 12 mm. | 6.84 | 8.90 | |
| 4.25 mm. | 0.28 | 0.36 | 12.25 mm. | 7.26 | 9.50 | |
| 4.5 mm. | 0.36 | 0.47 | 12.5 mm. | 7.36 | 9.60 | |
| 4.75 mm. | 0.44 | 0.57 | 12.75 mm. | 7.52 | 9.80 | |
| 5.0 mm. | 0.50 | 0.65 | 13 mm. | 8.51 | 11.10 | |
| 5.25 mm. | 0.56 | 0.73 | 13.5 mm. | 9.53 | 12.40 | |
| 5.5 mm. | 0.66 | 0.89 | 14 mm. | 10.49 | 13.70 | |
| 5.75 mm. | 0.75 | 1.01 | 15 mm. | 12.89 | 16.80 | |
| 6 mm. | 0.84 | 1.20 | 16 mm. | 16.06 | 20.90 | |
| 6.25 mm. | 0.93 | 1.30 | ||||
| 6.5 mm. | 1.00 | 1.40 | ||||
| 6.8 mm. | 1.25 | 1.80 |
Why Is It Important to Know the Carat Diamond Size Chart to Mm Size?
A Diamond's Millimeter Measurement Tells You Its True Size. That's Because a Diamond of The Same Carat Weight Can Have Slightly Different Faceting and Therefore Look Larger than A Carat Weight Equal. Each Carat Is Bifurcate Into 100 'points.' This Permits Very Accurate Measurements to The Hundredth Decimal Place.
Why Does Knowing the Exact Diamond Size Help in Making the Correct Jewelry Design?
Yes, It's Very Essential to Find the Exact Diamond Size As, when You Pick a Larger Diamond, the Quality of The Diamond Lack Thereof, Thereby Buying a Higher-Clarity Diamond that Is Smaller Is a Better Choice than Getting a Bigger Stone of Lower Clarity. That Is from An Immaculately Aesthetic Viewpoint. Moreover, if You Select the Larger Diamond Size Then There Is a Chance of Falling It Out.
How Does Knowing the Exact Diamond Size Help in Reducing the Diamond Sourcing Cost?
Knowing the Exact Size of The Diamond Will Help You to Get the Actual Price of The Diamond as Well as It Will Save You from Spending Additional Spending. A Diamond's Value Is Decided by Its Famous 4 Cs: Carat Weight, Color, Cut, and Clarity.

Conclusion
A Diamond Size Chart Is an Essential Tool in Every Aspect when Comparing Stones of Different Shapes and Carat Weights. A Diamond Size Chart Helps You to Understand how Diamonds of The Same Carat Can Appear Larger or Smaller Depending on Their Cuts and Shapes. Whether Shopping for An Engagement Ring or Pendant, a Size Chart Provides Clarity and Confidence in Your Every Decision for Further Process.
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Shop Round Lab Diamonds Design a Custom RingFAQS
1. What Is a Diamond Size Chart?
Ans: It Shows how Different Carat Weights Appear in Actual Size.
2. Does Carat Weight Determine Diamond Size?
Ans: Carat Affects Weight, but Size Also Depends on Cut and Shape.
3. How Do I Read a Diamond Size Chart?
Ans: Compare Carat Weights to Their Millimeter Measurements Visually.
4. Is a 1-Carat Diamond Big?
Ans: A 1-Carat Diamond Is Considered Classic and Well-Sized for Most Rings.
5. Do All Shapes Look the Same at The Same Carat?
Ans: No, Shapes Like Oval or Marquise Can Appear Larger than Round Ones.
6. How Big Is a 2-Carat Diamond?
Ans: Roughly 8.1mm in Diameter if Round, but Varies by Shape and Cut.
7. Why Does the Same Carat Diamond Look Different in Size?
Ans: Cut Depth and Shape Affect how Large a Diamond Appears.
8. Is Bigger Always Better in Diamonds?
Ans: Not Always, Cut Quality and Brilliance Are More Important.
9. Can I Use a Size Chart to Choose the Best Diamond for My Hand?
Ans: Yes, It Helps You Pick a Diamond that Suits Your Finger Size and Style.
10. Where Can I Find an Accurate Diamond Size Chart?
Ans: Most Reputable Websites Like Gemone Diamonds Provide Detailed Size Charts.

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