Embed a gem size chart on your website

By HeyGema™ · Updated

In short

Pick a shape and a gem, copy the code and paste it into your page. The chart shows carat to mm for that shape, or one stone with its size and the share of a finger it covers. Free to use; the code includes a link back to HeyGema.

Paste this into your page
<iframe src="https://www.heygema.com/en/gem-size/embed?type=chart&shape=round&gem=diamond" title="Diamond round size chart by HeyGema" width="100%" height="560" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font:14px/1.4 sans-serif">Size data by <a href="https://www.heygema.com/en/gem-size">HeyGema gem size chart</a></p>

Preview

What you get

  • A carat to mm chart for any of 12 shapes and 24 gems, from 0.25 to 10 carat
  • Or one stone: its size in mm, drawn to scale, and how much of a size 6 finger it covers
  • Works in any page builder that accepts an iframe
  • No account and no tracking of your visitors by you or by us beyond standard page analytics

Credit

The code includes a plain link under the frame. Please leave it in: it is how the free widget is paid for. The numbers come from the methodology; the full tables are on the data page.

Questions

Yes. Use it on any site with the link back to HeyGema that comes with the code.
The frame fits its container up to 640 px wide. Set the height in the code if you need to.

More size charts