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How to Use this Diamond Size Comparison Generator
The tool is actually quite easy to use. You just need to choose a diamond carat weight from the dropdown list and add it to the chart for size comparison. With respect to removing any figure, you can achieve that under the ‘Remove’ tab.
Please note also you can modify the position of any figure on the chart by dragging.
It’s worth noting there is a maximum number of 5 figures that can be added to the chart along with the hand figure. Of course, you can always remove existing figures if you reach the limit and want to add new ones.
In order to get the best visual results for comparing diamond sizes, try to do the following:
- When using a mobile device, make the view horizontal (i.e. landscape orientation)
- Access the tool from a computer or large tablet if at all possible
The Diamond Sizes that are Available Inside the Tool
The tool will allow you to compare the size of 16 carat weights of ten various diamond shapes.
The diamond weights used are the following (all in carats): 0.05, 0.1, 0.15, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3-8.
We included the following diamond shapes, which are probably the most common: round, oval, cushion, princess, radiant, asscher, emerald, marquise, heart, and pear.
As an example, following are the main sizes for round diamond (the most popular shape):
Sizes of Round Diamond | |
---|---|
Weight (ct) | Diameter (mm) |
0.25 | 4.1 |
0.5 | 5.2 |
0.75 | 5.9 |
1 | 6.5 |
1.5 | 7.5 |
2 | 8.2 |
3 | 9.4 |
4 | 10.4 |
5 | 11.2 |
More importantly, we also added a female hand fingers (excluding the thumb) to be used as a size reference.

It’s worth noting the length numbers are based on analyzing several online sources.
Conclusion
Whatever diamond weights you want to compare the size between, this accurate online tool will help you out. You just need to add the desired carat amount and diamond shape to the chart in addition to the hand.
It’s worth mentioning the chart axis shows the length measurement in both metric (i.e. centimeters and millimeters) and imperial units (i.e. inches and thou). So, you won’t need to worry about unit conversion.
Feel free to let us know if you find any size that’s inaccurate so we can correct it. Also, we would love to hear any suggestions or questions about the tool.