Choosing an emerald is often driven by esthetic considerations. However, some criteria as weight, color, clarity and shape has an important role with a direct impact on its value.
Before to buy, it is recommended to be advised by a specialist who will also check the kind of treatment that has been used on the gem.
This measurement unit is used for every gemstone, and it allow to compare a gem to another. One carat worth 0,20 grammes. The more an emerald will be heavy, the more its price will raise. But the three others criteria will either have an important influence on its value.
Compare to others gemstones, emerald has a less important density : 2.67 instead of 3.52 for a diamond. On equal weight, it will look bigger.
Requiring a very specific and artistic technic, the cut of an emerald can be down be very advanced professionals. The reason of its complexity is based on the high fragility of the emerald.
Historically, the most common cut is the « oval’s emerald ». The pear-cut is also very appreciated for necklace.
The round cutis used for little gems, wich give it a beautiful diamond effect.
This is one the most important criteria for an emerald. It is the seduction’s attribute of this special gem, consider to be the most mystical of them. Its tint can wave from bluish green to dark green with a really high intensity. To talk about it, professionals are using the terms of saturation, tint and fade.
The most wanted emeralds are most of the time deeply green. However, shiny emeralds are used to be with a lighter color. It is all a question of taste at the end.
Emerald is the gemstone that contains the most of inclusions. The notion of clarity for an emerald is based on the nature of the inclusions and their origins. The main criteria is based on the fact that the inclusions has to give an unique aspect to the gem without impacting its clarity too much. Instead of talking about inclusions, we talk about « jardins ».
Clarity and transparency are linked. The market accept inclusions in the emerald, even of high quality. But if there is an direct influence on the clarity of the gem, the value of it will be highly impacted.