From the experts

Advanced ASET We are pleased to announce that AGS Laboratories now offers a Platinum Grading report called “Advanced ASET." Instead of a single ASET imprint, they will use the mechanical scan to render and print ASET at two levels of obstruction (explained...

Percentages and angles on grading reports are helpful in several ways. They make it possible to separate diamonds with higher performance potential from average and poor performers. They make it possible to predict certain likely elements of performance charact...

You may not know that girdle thickness happens on a sliding scale. For example, "Thin" is 10X wider than "Very thin." In fact the AGSL range for thin is the widest of all ranges. You can see below that it's wider than the ranges for medium and slightly thick...

Why is fluorescence devalued by miners, producers and jewelers alike? Why is it considered a negative by so many professionals? Why is there such prejudice against a harmless chemical element that some diamond wearers love? Most importantly Why doesn't...

The whole purpose of your driver’s license photo is identification. That's also the purpose of a diamond grading report. The graders note and plot what they see at 10X magnification so other professional gemologists can verify the same characteristics i...

Permit me to explain how, in both fridges and diamonds, it's more beneficial for a seller to discount for deficits such as scratches (in fridges) or performance-reductions (in diamonds) than to repair the deficits. Please read on... Fridges are sold in many plac...

We regularly inform our clients about how we are rejecting hundreds of starting crystals for every diamond we craft. And while the results are seen and appreciated, the abundance of diamonds they'll never see is something of an abstraction, just stated as "hundreds rejected."...