How often do you find yourself trying to calculate carat weights while quoting up a job? Need to estimate TCW on a bespoke job with multiple sizes or pull an old stone from scrap and don’t have your scale handy? This has happened to me far too many times, and the charts I found available online were either incomplete or just a little too convoluted.

So i’ve created something that I have now posted on my studio's wall and find extremely handy.