Gem Estimator Guide The gem estimator is your go-to tool for quick, on-the-spot size estimation. This diamond weight estimator helps you determine the weight and dimensions of loose or mounted stones when other methods aren’t available, making it ideal for jewelry makers and gemstone enthusiasts. It works with emerald, marquise, pear, round and baguette shapes, as well as brilliant full cuts, delivering reliable results you can trust. Simply lay the gem estimator on your stone pad and place the stone—the measurements align with standard faceted shapes for accurate sizing. Suitable for loose or mounted stones Works with emerald, marquise, pear, round, baguette and brilliant full cuts Simple layout on a stone pad for fast readings Portable, durable construction for on-site use Supports precision sizing for jewelry manufacturing and appraisals Enhance your gem work with this practical estimator. Gem Estimator Guide helps you size confidently—add to cart today and streamline your stone sizing workflow for faster, more accurate results.