Last week, a ring was received in the laboratory featuring a noteworthy laser-drilled diamond. The drill hole exits through the table of the stone, extending a considerable length to a small red-toned crystal easily visible under 10x magnification. crystal inclusion This technique is used to enhance a stone's clarity by using infrared lasers to drill microscopic holes directly into the targeted inclusions. The inclusion can then be bleached in a sulfuric acid solution, thereb

This ring was submitted to the laboratory and upon examination we noticed a natural ‘part of the skin’ of the diamond. On the pavilion, you can see what is sometimes referred to as a ‘hopper’.

PGS Laboratory recently completed a study of lab-grown fancy yellow and orange diamonds produced by Gemesis Corporation. The research offered a deeper look into the HPHT growth process, revealing a range of distinctive features unique to these stones. The following photomicrographs highlight several of the study’s key findings.

The laboratory recently photographed an outstanding collection of Demantoid garnets from Russia’s famed Ural Mountains, known for producing some of the gem’s finest colors. Though new production is minimal, stones from this historic source still appear on the market through second-hand channels. We had the pleasure to do a photographic study on a fine collection of Demantoid garnets from the classic deposit in the Ural Mountains of Russia. This deposit has long been lauded fo