Diamond Screeners vs. Testers


Never be uninformed when it comes to your diamonds!

Lab-grown diamonds (LGD) are on the rise in demand and popularity. Why, you ask? Because they allow for any customer to have the diamond of their dreams that also includes an attractive price point and quality options. However, we must be careful when pointing to our reputation because of the distribution of undisclosed lab-grown diamonds (ULGD). The diamond industry discovered the problem of ULGD being sold in 2017. The GIA lab in Mumbai screened a melee parcel and found that one-third of its stone supply was ULGD. This circumstance explained the importance of protecting the integrity of any stone or gem inventory. Understanding the differences between testing and screening while using the topmost instruments for each process will protect your reputation as a jeweler. To understand which piece of equipment is best for you, we should break down the differences between the two.

Diamond testing is the process used to positively identify which diamonds are authentic compared to a Moissanite or another stimulate. A diamond tester will not, however, tell you the difference between LGD or natural diamonds. Here are some recommended Stuller approved diamond testers that we love:


Some diamond testers can be a little bit on the pricey side, but consider the cost of your reputation. If you unknowingly sell a LGD or a stimulate in the place as a natural diamond, how much would that, in turn, cost you? Protecting yourself and your work is essential because it is crucial to have the proper equipment to test your inventory to have the best pieces to offer.

Diamond screening is the process of separating natural diamonds and LGD. Because it is impossible to identify the growth origin of the two by sight alone, screening equipment is the surest way to determine between the pair.

Screeners use short-wave ultraviolet light to identify the differences between natural and LGD. Here are some recommended screeners that Stuller customers love and trust:


By having a diamond screener in your arsenal of tools, you can assure with total confidence that your stock of gens and diamonds are what they say they are and stop any undisclosed lab-grown diamonds from stepping foot on your sales floor.

Having one of these instruments is becoming essential to any operation because of the growing popularity of LGD. When choosing between a diamond screener, stone tester, or even both, it's necessary to imagine the ways diamonds enter your store. Whether for customer repairs, loose melee, semi-set pieces, large loose stones, or finished jewelry. These are just a few pathways that stones can enter your store and potentially get mixed in with your existing inventory. Investing in diamond screeners and stone testers is the sure way to make sure that your reputation is protected right in the comfort of your store. Please note that no single screener or tester can perform every function. For maximum security, understand the limitations of all your instruments.