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Gem Calculator - Carat Weight Estimate

requires JavaScript

measurements to estimate carat weight f0r diamonds and gemstones

Select Gemstone, Shape, etc.






Measurements (mm)

Diameter *


or

Length

Width


and

Depth


Variables



Estimated Weight (ct)


* Some rounds are very slightly ovaled. Add the 2 most extreme measurements then divide by 2.

Download a free stripped down version of this estimator to run on your desktop. Just save the new page to wherever you want to keep it. Remember, it requires JavaScript. If you want the image, you will have to save this page.

Note After downloading the page to your desktop, you may need to change the page extension from .php to .htm or .html so your browser will open the file.

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