If want to distinguish the artificial emerald from the natural, it is very difficult. First of all, you need to focus on price. Real stone is much more expensive, and large emeralds are fabulously expensive. Therefore, don’t buy a large stone with a reasonable price as there is a possibility of it being not original.
The more transparent the emerald, the higher will be the cost of it. Emeralds are can be in light or dark colour depending on their origin. Dark emeralds are much more expensive and can be purchased only in high-end jewellery boutiques.
Determine the authenticity of the stone without a frame is not so difficult. Take a good magnifying glass and look at the emerald angle. In this perspective, you can see the so-called line of growth of the stone. In artificial emerald, these lines will be completely parallel. The real stone line also should be parallel, but not so orderly.