Guide for No Oil Colombian Emeralds June 3, 2021 – Posted in: Jewelry Blog

No Oil Colombian Emeralds are one of the most valuable gemstones in the world, and in some cases, they can equal the price of diamonds of the same carat weight. 

In this complete buying guide, we will go through exactly what no oil Colombian emeralds are, how to find them, and why you should choose them for your engagement ring. 

What Is a No Oil Colombian Emerald?

Rare No Oil Colombian Emerald on Finger

A No-Oil Colombian Emerald is a natural emerald gemstone, mined in the country of Colombia, and contains no oil treatment. They’re the most valuable and desirable types of emeralds in the world.

Emeralds are part of the Type III gemstone category. This means that they are usually heavy with inclusions. What sets no oil emeralds apart from other gemstones is the fact that they are allowed to have inclusions.

Jewelers usually treat internal fractures in emeralds with cedar oil. The oil fills into the cracks within emeralds, enhancing their clarity and even improve the color. While oil treatment is generally accepted by the gem trade, many collectors, investors, and buyers prefer no oil emeralds. 

While oiled emeralds might seem perfect, it comes with a lengthy list of disadvantages. For one, the oil will eventually dry out, so you will have to reapply it every once in a while. Oiled emeralds are also harder to fix if they get chipped or fractured. Common household substances, or even hot water, can also erase the effects of oil treatment. 

Unlike other gems, which lose their value if they have inclusions, high-quality no oil Columbian emeralds are allowed to have these imperfections. Not only are inclusions accepted, but no oil Colombian emeralds can be even twice as expensive as treated emeralds of the same color, cut, and carat. 

The highest-quality types of no oil Colombian emeralds exhibit an intense, almost transparent, pure green color. Even the slightest secondary hues, such as yellow or blue, can decrease the value of the emerald. Due to their extreme rarity, no oil Colombian emeralds are often sold at a very high price. 

History of Columbian Emeralds

Muzo Mine Colombian Emeralds Raw and Just Mined
Raw Emerald from the Muzo Mine in Colombia

While there have been countless stories retold about treasure hunting and expeditions seeking gold, the history of emeralds dates back to ancient times. 

Before the Pre-Columbian period, the first records of emeralds came from Ancient Egypt, when emeralds were considered to bring good luck and fortune. In Central America, emeralds were part of religious rituals. The quest for emeralds in what is now Columbia began in the 15th century when Spanish conquistadors came to the New World. 

Emeralds have always carried some sort of special meaning, which changed from civilization to civilization. Some claim that they have healing powers due to their calming green color. According to some other ancient legends, emeralds could help you see the future. Others believed that they could improve your intelligence, ease childbirth, and bring good luck to marriages. 

Mining was first developed in Pre-Columbia by the Muzo indigenous people. It took over 500 years for the Spanish to take over their mines. Once they brought back the emeralds that they had taken from the indigenous people to Europe, the global market for the Columbian emerald began. 

During the course of the 19th and 18th centuries, emerald mines have been the central issue of many civil wars and political problems. Even today, illegal emerald mining and illicit trade still represent a troubling concern in Colombia. 

The most famous emerald mine in Colombia is the Muzo mine in the western Boyacá province. Other Colombian mines that have a long history of producing emeralds are the Coscuez mine, Las Pavas, and La Pita in the Western belt, and the Chivor mine, the Somondoco mine, and the Gualí mine in the Eastern belt. 

No Oil vs. Oiled Colombian Emeralds 

Emerald Cocktail Ring with Diamond Halo in Platinum
SOLD. An Oval-shaped Emerald with a diamond halo

It is no secret that the majority of Colombian emeralds are treated in some sort of way. In fact, it’s quite a challenge to find an emerald that isn’t heavily treated, let alone untreated. 

Why are Columbian emeralds treated in the first place? Emeralds usually come with inclusions that occur beneath their surface. Whether an emerald has cracks, bubbles, embedded crystals, or any other types of fractures, the internal inclusions make the emerald seem cloudy or opaque. 

To enhance the appearance and quality of emeralds, they are often treated with oils. To make an emerald seem clearer, oil is added to fill the cracks. In most cases, natural oils are used for this treatment process. The most popular oil for treating emeralds is cedarwood oil. Others prefer to use synthetic resin or polymer fillers. 

In some cases, oil treatment is also used to improve the color of an emerald. However, if the color is intense enough to meet certain requirements, colorless oil is used for the treatment.  The level of emerald clarity enhancement can be measured from none to insignificant, minor, moderate, and significant. While using natural oil treatments for emeralds is accepted by the gem trade, color-tinted oils are not. 

As mentioned, the main issue with oiled emeralds is that the oil dries out sooner or later, which means that you have to reapply it. Therefore, oil treatment is only a temporary solution.  If your emerald requires future repairs, oil treatment can make it very difficult or even impossible. 

As a result, no oil Colombian emeralds are very challenging to get a hold of. Therefore, no oil emeralds are extremely valuable. No oil emeralds are worth much more than a fully treated emerald with minimal to no inclusions. 

Why Colombian Emeralds Are the Best?

Colombian emeralds make up between 70% to 90% of the global emerald market. The majority of Colombian emeralds were found in the Boyacá province and the Cundinamarca department, located in the Eastern Ranges of the Colombian Andes. Some of the most famous Colombian emerald mines include Muzo, Coscuez, and Chivor. 

The Muzo mine continues to be the most significant emerald mine in the world. Not only does it produce a large number of Colombian emeralds, but it also yields a specific type of emerald, completely unique to this mine. Emeralds from the Muzo mine have a grassy-green color with slight yellow hues. Colombian emeralds that come from other mines usually contain a much darker shade of green. 

What makes Colombian emeralds the best emeralds in the world is their quality. To be more precise, Columbian emeralds are the purest emeralds ever found. 

Their host rock – the rock that miners dig them out from – lies behind their purity. While other emeralds are found in magmatic, or igneous rocks, Colombian emeralds are dug out of sedimentary rocks. These types of rocks contain high levels of saline, which gets rid of iron impurities inside the emeralds. 

The vibrant green color of Colombian emeralds comes from chemical elements such as beryllium, chromium, and vanadium. These chemical elements produce a unique green hue that makes almost every Colombian emerald unique. 

The most valuable Colombian emeralds have a dark green hue, but you can only find them in the deepest Colombian mines. 

How Much Do No Oil Columbian Emeralds Cost? 

As mentioned before, the price of a no oil Colombian emerald can equal a diamond that has the same carat weight. This just goes to show how valuable no oil Colombian emeralds are. 

There are a number of factors that can influence the overall price of an emerald. Just like diamonds, they can be graded according to the four Cs (color, clarity, cut, and carat). Naturally, color is the most important quality-determining factor. Emeralds need to exhibit a pure green, almost transparent color to be valuable. 

No oil Columbian emeralds come with inclusions, an obvious sign that they haven’t been treated in any way. However, even though they are bound to have some inclusions, the fewer they have (without treatment), the better. While cut and carat are essential to some degree, they don’t determine the price as much as the first two factors. 

No oil Columbian emeralds that aren’t heavily included can cost from ten to hundreds of thousands of dollars, even though they weigh less than one carat. In fact, one carat of a no oil Columbian emerald is usually estimated at around $100,000. 

Of course, there are some no oil Columbian emeralds that are worth a fortune. For example, the Rockefeller Emerald, at 18 carats, was sold for approximately $5.5 million. Another famous example of a Colombian emerald is the Elizabeth Taylor Brooch by Bvlgari, which cost around $6.5 million. 

Since no oil Colombian emeralds are so rare, their price is bound to increase in the future.

Tips for Shopping for a No Oil Colombian Emeralds 

If you are planning to buy a no oil Colombian emerald, here are some things that you should keep in mind: 

Make Sure That Your Emerald Is Not Treated 

UGL Diamond Certification on Table

As it’s very challenging to find no oil Colombian emeralds. There’s also a fair chance that you might not be looking at. 

According to the US Federal Trade Commission, if the emeralds you are selling have been treated, you are obligated to disclose that piece of information. Still, many people aren’t aware of this policy, therefore it’s not difficult to scam a buyer. 

You should always look for emeralds that have certifications that prove that they are natural. 

Ask About the Four Cs 

The four Cs do not only apply to diamonds but other gemstones as well. For emeralds, the most important quality-determining factor is color. It’s hard to find emeralds that have a pure green hue, as most of the time they exhibit slight yellowish or bluish undertones. 

Clarity is, of course, also very important. However, keep in mind that visible inclusions are a clear sign that the emerald hasn’t been treated. It’s possible to find an emerald with minimal inclusions, though they are very expensive and exceptionally rare. 

Emeralds usually have a rectangular shape; after which it was named the “emerald cut.” In terms of size, it’s possible to find emeralds of different carat rates as well. The no oil Columbian emeralds of the highest quality are worth $10,000 per carat. 

Decide Which Metal Goes Best With the Emerald 

Gemstones are always accompanied by either gold, silver, or platinum. Due to their deep green color, emeralds are best paired with platinum. If you choose gold, it might emphasize any secondary yellow hues your emerald might have. Of course, this decision ultimately depends on personal preference. 

Expect Inclusions 

As mentioned before, untreated, natural gemstones are bound to come with inclusions. It would be almost impossible to find a no oil Columbian emerald without a single fracture. If such a gemstone exists, it is probably in possession of a private collector. 

How to Make a Ring for a Colombian Emerald? 

Colombian Emerald Ring from Estate Diamond Jewelry Worn on Finger

So you’ve decided that you want a Columbian emerald for your engagement ring. The next step is to choose the one you like best. We recommend that you first take a look at the emerald ring selection that we have to offer. 

Once you find an emerald ring that catches your eye, you can contact us here.  It’s a good idea to reserve the ring so that nobody else can buy it before you. 

On the other hand, you also have the option to design your own Columbian emerald ring.  All you have to do is pick one Columbian emerald from the EDJ catalog, and decide on the cut, and we will do the rest. 

If you prefer this option, you will go home with a custom-made, 100% unique, Colombian emerald engagement ring. 

Famous Examples of Colombian Emerald Jewelry 

Two Colombian Pear Emeralds Earrings
From Our Collection: A rare pair of earrings featuring two Colombian Emeralds weighing 8.52 carats total

Emeralds have a long, rich history. People have waged wars over them in the past, and they are still highly sought after even to this day. Here are some of the most famous Colombian emeralds that have made their way into history: 

The Duke of Devonshire Emerald

Duke of Devonshire Emerald Muzo Colombian

The Duke of Devonshire Emerald is one of the largest uncut Colombian emeralds in the world. It weighs approximately 1,383.93 carats. It was found in the Muzo mine in Colombia, which is the most famous emerald mine in the world. Today it’s in the Natural History Museum in London. 

The Rockefeller Emerald 

Rockefeller Emerald Colombian Ring

One of the most famous Colombian emeralds is the Rockefeller Emerald. It’s almost perfectly transparent, and it didn’t go through any type of treatment. It weighs 18 carats, and it’s worth $5.5 million, and currently belongs to a private collection. It has an octagonal step-cut and a beautiful deep green color. 

The Chalk Emerald 

Square Cut Chalk Emerald Ring With Diamonds

This emerald is a 37.82 carats (or 7.564 g) Colombian emerald. In 1972, it was donated to the Smithsonian Natural History Museum, as part of the Smithsonian’s National Gem and Mineral Collection. 

The Patricia Emerald 

This famous emerald was discovered in 1920, and it was named after the daughter of the man who owned the mine at that time. The Patricia Emerald weighs 630 carats and a di-hexagonal cut. New York’s American Museum of Natural History is its current home. 

Gachalá Emerald 

Gachala Emerald Raw Green

Discovered in 1967 in the Vega de San Juan mine, the Gachalá Emerald is also quite famous. The uncut emerald weighs approximately 858 carats. Its current home is the Smithsonian Institution in New York. 

The Raw Beauty of No Oil Columbian Emeralds 

Emeralds have been considered the most beautiful gemstones in the world for thousands of years. They symbolize elegance, wealth, and royalty. Even though the majority of emeralds are treated with fracture-filling oil, it’s still possible to find no oil Colombian emeralds. 

If you choose a no oil Colombian emerald for your engagement ring, you can’t go wrong. Such an engagement ring is bound to bring you good luck. 

Contact EDJs to View Colombian Emerald Collection 

Showroom picture with Afshin at Estate Diamond Jewelry

EDJ offers a stunning collection of emerald engagement rings that you can go through here. However, most of the rare Colombian Emeralds are not on display on our website. The full collection is very rare and viewable by request only.

Here’s what you need to mention so that we can help you:

  • Your budget
  • What type of Emerald Jewelry you are looking for? (ex: Ring, Earrings, Brooch, Necklace, Bracelet, or loose stone)
  • (Optional) Approximate carat size of emerald

Please Note: We buy No Oil Colombian Emeralds. If you have a No Oil Colombian Emerald that you want to sell to us, please let us know.