Professional Oval Diamond Size Chart
Detailed Oval Cut Size Comparison From CT to MM / MM to CT by Gemologists
The modern rendition of the oval shaped diamond is among the highest sold diamond shapes in the world. While during its creation in its modern form in the 1960’s the goal was to create a hybrid of the pear and round cut, it has long since become independently successful. As a result, the need for quick and easy conversions of ct to mm and mm to carat is more important than ever.
The following Oval Diamond Size Charts will provide you with quick and easy access to the much needed conversion of Oval Diamond Carat Size to MM, and the other way around. It’s important to note that the Oval Shaped Diamond, along with other shapes like the Baguette, and Emerald, has different variants of length to width ratios, and as such has included the information in our charts to ensure maximum coverage and accuracy.
Oval Cut Diamond Conversion Tool From CT to MM / MM to CT
0.04 - 1.15 cts.
Copyright © AVA DIAMONDS
| OVAL CUT CARAT WEIGHT | OVAL CUT LENGTH MM SIZE | OVAL CUT WIDTH MM SIZE |
|---|---|---|
| 0.04 - 0.07 ct | 2.50 - 3.40 mm. | 2.00 - 2.40 mm. |
| 0.08 - 0.12 ct | 3.40 - 4.80 mm. | 2.40 - 3.00 mm. |
| 0.13 - 0.17 ct | 3.90 - 4.40 mm. | 2.80 -3.10 mm. |
| 0.18 - 0.22 ct | 4.10 - 4.60 mm. | 3.00 - 3.40 mm. |
| 0.23 - 0.28 ct | 4.50 - 5.10 mm. | 3.30 - 3.60 mm. |
| 0.30 - 0.37 ct | 4.90 - 5.60 mm. | 3.60 - 4.00 mm. |
| 0.40 - 0.48 ct | 5.60 - 6.00 mm. | 4.00 - 4.40 mm. |
| 0.50 - 0.58 ct | 5.90 - 6.30 mm. | 4.40 - 4.60 mm. |
| 0.60 - 0.69 ct | 6.30 - 6.70 mm. | 4.60 - 4.80 mm. |
| 0.70 -0.78 ct | 6.60 - 6.80 mm. | 4.80 - 5.20 mm. |
| 0.80 - 0.88 ct | 6.90 - 7.30 mm. | 5.10 - 5.40 mm. |
| 0.90 - 0.98 ct | 7.20 - 7.80 mm. | 5.20 - 5.50 mm. |
| 1.00 - 1.15 ct | 7.90 - 8.20 mm. | 5.50 - 5.80 mm. |
Ava Diamonds
1.20 to 1.15
Copyright © AVA DIAMONDS
| OVAL CUT CARAT WEIGHT | OVAL CUT LENGTH MM SIZE | OVAL CUT WIDTH MM SIZE |
|---|---|---|
| 1.20 - 1.27 ct | 8.10 -8.30 mm. | 6.00 - 6.10 mm. |
| 1.30 - 1.45 ct | 8.40 - 8.50 mm. | 6.00 - 6.20 mm. |
| 1.50 - 1.60 ct | 8.50 - 8.80 mm. | 6.20 -6.40 mm. |
| 1.65 - 1.80 ct | 8.90 - 9.60 mm. | 6.60 - 6.80 mm. |
| 2.00 - 2.30 ct | 9.80 - 10.10 mm. | 7.10 - 7.30 mm. |
| 2.40 - 2.60 ct | 10.30 -10.70 mm. | 7.50 - 7.80 mm. |
| 2.70 - 2.90 ct | 10.70 - 11.00 mm. | 7.80 - 7.90 mm. |
| 3.00 - 3.30 ct | 10.90 - 11.60 mm. | 8.00 - 8.40mm. |
| 3.40 - 3.60 ct | 11.50 - 12.00 mm. | 8.40 - 8.70 mm. |
| 3.70 -3.90 ct | 12.00 - 12.35 mm. | 8.80 - 8.90 mm. |
| 4.00 - 4.20 ct | 12.25 - 12.50 mm. | 8.80 - 9.00 mm. |
| 4.40 - 4.70 ct | 12.40 - 13.00 mm. | 9.00 - 9.30 mm. |
| 5.00 - 5.25 ct | 13.00 - 13.60 mm. | 9.40 - 9.70 mm. |
Ava Diamonds
What are the Ideal Proportions of an Oval Cut?
Like other fancy cuts, the Oval Shaped Diamond does not get graded by GIA. We’ve overcome this through personal experience in gemology and manufacturing, which has helped us establish our own guidelines to fil the gap and to ensure a method of differentiation between excellent cut oval diamonds and lower grades.
What is the Ideal Diamond Depth and Table for the Oval Cut?
Oval Cut Diamond Recommended Proportions Guide
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
Table - % | 67% - 72% | 59% - 66% or 73% - 75% | 59% - 66% or 73% - 75% |
Depth - % | 64% | 75% | 58% - 63.9% or 75.1% - 80% |
Girdle | Very Thin to - | Slightly Thick | Very Thin to Thick |
Culet | None | Very Small | Small |
What is the Ideal Oval Cut Diamond Length to Width Ratio?
The Length to Width Ratio if an Oval Cut Diamond is highly important factors. While personal tastes do play a factor in opting for a narrower or thicker stone for example, the following ratios are highly effective as a guideline to the most desirable oval shapes proportions and their recommended ratios.
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 1.00 - 1.03 | 1.30 - 1.34 or 1.51 - 1.55 | 1.25 - 1.29 or 1.56 - 1.60 |
