The world of gemstones: Colombia

It is far from easy to get to the fields where the most beautiful emeralds are found. After protracted discussions with the Colombian authorities, our buyers have been able to get closer to the mines. Travelling by helicopter they avoid the bandits waiting on the roads.

The most appreciated stones (and thus the most in demand) are undoubtedly those found in the mine of Muzo. They have an intense green made up of approximately 48% blue and 52% yellow: a deep, dark and velvety green. Inclusions are often numerous, and flaws may alter the beauty of the stone, but they are still tolerated since flawless specimens of a reasonable size are almost non-existent. As a matter of fact, experts prefer the poetic title "the garden of emeralds" in order to reduce the impact of these imperfections, or rather, impurities of nature. This said, one should still choose the least frosted specimens: models with inclusions which do not stop the reflections or the passage of the light.
Shape is an essential element in choosing an emerald. We need to remember that a rough emerald with a beautiful dark color may become clearer if the stonecutter, in shaping it too closely without regard for the optical axis, may alter the original color of the crystal.

On this subject, we would like to emphasise that there is neither an angle nor a proportion to take into account (as opposed to diamonds), and that stonecutters all around the world can make an emerald sparkle as it comes alive in their skilled hands.

When badly cut, an emerald may show a brilliant circumference, but have an empty, glassy appearance on its axis. Emeralds can be cut in any shape, but their hexagonal system of crystallisation favours the so called "emerald cut", rectangular or square with facets.

In addition, the weight does not have a major effect on the price of the gem, as is the case with diamonds. It is rather the surface area of the gem that counts. The density of the emerald is far inferior to that of the three other precious stones.

In other words, a two-carat-emerald will have a surface area 50% larger than a sapphire of the same weight, which is cut in the same proportions.
To be sure of making a good investment when buying an emerald, you need to choose one which has a beautiful green, with a velvety brilliance without too many inclusions or fractures (stay away from emeralds with external hairlines). It should be well shaped and weigh between 3 and 7 carats. The circumference must never have little cracks.

Contact us for an appointment at our offices in Paris or Antwerp.

You will be able to buy the stones at wholesale prices.