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Visual Proportion Analyzer

The Visual Proportion Analyzer (VPA) was developed by the AGS Laboratory research team to enable the user to determine the cutting precision of round brilliant cut diamonds quickly and easily.  The software is completely free. We only ask that if you find it of value to please give us some feedback about it.   Contact the AGS Laboratories by emailing

The software is a tool that can help you to be a much better buyer of diamonds. It can help you make more sales, particularly with the increasing number of high tech/engineering/scientific/better-educated buyers.

It also gives you a unique story to tell about precision, art, and performance in some of your sales presentations.  Who does not need another good story to tell when selling?

Lastly, we hope you will ‘get it’ when you learn about the extraordinary levels of precision that some diamond cutters are able to accomplish.  They are cutting to levels not possible as recently as just a few years ago.

Please email us to request the software, AGS Laboratories will send you an email with an attachment which contains the full version of the software.  Instructions for activation will be included in the email. The software will only run-on Microsoft Windows machines.

This software can only be used if you have access to a Sarin machine or an. stl or .srn file. To learn more about the AGS Laboratories Cut Grade System, click here.