Inclusions in Emeralds

A short series guide about inclusions in emeralds.

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Gem-related Field

A Short Introduction About Emeralds
Firstly, unlike diamonds, emeralds are completely unique due to their inclusions. It is uncommon to find emeralds free of inclusions, and some of them, especially the esthetic ones, are highly valued by collectors. The vast majority of experts believe that inclusions have evidence of authenticity. They also enable gemologists to decide the origin of the stones. For example, two-phase inclusions are typical of Brazilian gems, while three-phase inclusions with microscopic salt traces are typical of Colombian emeralds. However, too many "gardens" - or inclusions - can increase the emerald's opacity and reduce its value.
One simple way to check whether or not your emerald has been treated is to look through a microscope to check if any blue or yellow/orange flashes from internal cracks occur. These colored lines are more likely to suggest clarity enhancement.

Note, however, that certain rainbow-like interference colors can naturally occur in #unenhanced natural emeralds. This is why this approach is not 100% reliable and you should always verify your stones with a qualified #lab if you are unsure of the results.
Why Such Care?
Major jewelry houses have started to demand complete transparency, reliability, and, as a result, laboratory certification not only for diamonds but also for colored stones. While all gemstones can be analyzed, the market has unique requirements, the most relevant of which for emeralds is Beryl testing. Beryl research encompasses both aquamarine and emeralds; for both, authenticity is critical, and for emeralds, treatment recognition is critical for clients. In this case, the usual screening technique is to distinguish between artificial resin fillers and other fillers (oil, wax, natural resin).

Chemical analysis is often needed to double-check this method. For this, labs employ two distinct programs. One will look for elements heavier than beryllium, while the other will see if there are any lighter elements in the stone, such as corundum.
Minor Emerald Brazil 7.75 cts

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Benjamin Poudevigne
Social Media Manager at GemMatrix
With over ten years of marketing experience, I finally decided to settle down in Bangkok to work in an area that I have always been interested in: the gemstones industry. I'm still learning how the market works on a daily basis, and I enjoy sharing my experience with those who are interested in learning more about gems in general.