Emerald Clarity Guide: What Inclusions Mean When Buying an Emerald

Emerald clarity is one of the most misunderstood aspects of buying a natural emerald. Unlike diamonds, where clarity is judged by the absence of inclusions, emeralds are expected to contain a certain amount of these internal features that formed during their growth. These inclusions are part of what makes each emerald one-of-a-kind.

If you’re shopping for emerald jewelry in Canada, North America, or internationally, understanding how clarity works will help you evaluate quality, value, and long-term durability before choosing a stone.

This guide explains what an emerald inclusion means, how clarity affects price, and what to look for when buying an emerald across rings, pendants, earrings, and bracelets.

Emerald clarity is just one part of gemstone evaluation. To understand how it fits into the full grading system, read our 4Cs of diamonds and emeralds guide.

Why Emeralds Naturally Contain Inclusions

Like most natural gemstones, Emeralds form under intense geological pressure and in environments rich with minerals. During this process, internal features form inside the crystal structure. These features are a natural part of emerald formations in particular and are present in the majority of stones on the market, to some degree.

Since slight inclusions are expected, emerald clarity is evaluated differently than diamond clarity. Instead of aiming for flawlessness, the goal is to find an emerald whose inclusions do not compromise its colour, crystal, "life" or durability.

In practice, buyers often assume a “perfect” stone is always better, but in emeralds, colour and overall presence usually outweigh the absence of inclusions.

What Is A “Jardin”?

Emerald inclusions are often referred to as jardin, a French term meaning “garden", referring to the moss-like internal patterns commonly seen inside natural emeralds.

Jardin can appear as:

• fine internal lines

• crystal inclusions

• feather-like structures

• clouded areas

These patterns are not always seen as flaws in the same way they are in diamonds, but there are cases where the inclusions can reduce the overall beauty and value of a stone. When the raw emerald faceted with expertise, making the most of the inclusion, they easily become a part of the gemstone’s natural character and can even help confirm that an emerald is natural rather than synthetic or lab grown.

Certain inclusion patterns may also provide clues about geographic origin, including Colombian emeralds, which are often associated with specific internal characteristics.

How Emerald Clarity Is Evaluated

Emerald clarity is judged primarily by:

• the visibility of inclusions

• the impact on transparency

• the impact on structural durability

Most emeralds fall into one of the following general clarity categories:

Eye-clean (rare):
When inclusions are not visible to the naked eye.

Moderately included (common):
When inclusions are visible but do not significantly affect transparency or durability.

Heavily included:
When inclusions are prominent and may affect both appearance and strength.

A moderate level of inclusion is normal for natural emeralds and does not automatically reduce value. What matters most is whether inclusions disrupt colour, transparency, or structural integrity.

Emerald Clarity vs. Diamond Clarity

Diamond clarity is graded with the goal of finding stones as free from inclusions as possible. Emerald clarity follows a different philosophy.

A diamond with visible inclusions often loses value.

An emerald with moderate inclusions can still be considered high quality if colour and crystal are strong.

Understanding Emerald Enhancements

Most natural emeralds receive some level of clarity enhancement. This is typically done using oils or resins that fill microscopic fissures and improve transparency.

Understanding treatment level is important when evaluating value and durability.

Natural Oil Treatments

The most common treatment for emeralds is oiling. This process fills fine internal fissures and improves clarity without permanently altering the stone.

Preferred oils include:

• cedar oil - premium treatment, less common due to higher cost

• palm oil - high quality, widely used due to more accessible cost

Minor to moderate oil treatment, also rated as F1 and F2 treatments, is considered industry standard across global markets, including Canada and North America, and generally has minimal impact on value.

Lower-grade oils may be used in some stones and are less ideal as the quality is unverified and longevity uncertain.

The more oil that is absorbed by the stone to fill the fissures, such as "significant oil treatment" ratings, the assumption is that the true appearance of the stone is less than ideal and it is more likely that you'll have to maintain ongoing treatments over time to upkeep the altered appearance. 

Its import to understand that emerald oil treatments are not permanent and may require maintenance over time, which is why knowing the treatment of your stone equips you with the knowledge of ideal care practices.

Things to avoid:

• ultrasonic cleaners

• harsh cleaning chemicals

• prolonged high heat (saunas, steam rooms)

• strong solvents

If you're going to be in an environment where these factors are present, we recommend that you remove your jewelry.

When cleaning, warm water and mild soap and a gentle brush is typically recommended.

Resin and Polymer Treatments

More significant enhancements may involve synthetic resins or polymers. These treatments are more permanent and can indicate that a stone needed structural stabilization. 

Heavily resin-enhanced emeralds may:

• appear clearer than expected

• be lower in value based on market standards

• discolour over time

• have reduced long-term durability

Resin treatment can suggest that a stone’s internal structure needed reinforcement.

When evaluating emerald quality, treatment disclosure and certification are just as important as colour and carat weight.

When purchasing raw emeralds, it is not recommended to buy any resin treated material as it is likely to break when faceting is attempted.

Untreated Emeralds

Untreated emeralds are less common and can be among the most valuable gemstones available. These stones do not require clarity enhancement due to stronger natural transparency and internal stability.

An untreated emerald with strong colour and good clarity can command significantly higher value than a treated stone.

However, untreated does not always mean better. A heavily included untreated emerald may still be less desirable than a well-coloured stone with minor oil enhancement.

How Clarity Affects Emerald Value

Although clarity influences value, it is rarely the primary factor.

Value typically follows this order:

1. Colour grade

2. Origin

3. Clarity grade

4. Cut grade

5. Carat

A vivid green emerald with moderate inclusions is often more valuable than a clearer stone with weaker colour.

Buyers evaluating clarity should focus on:

• whether inclusions interrupt colour

• whether inclusions reduce transparency

• whether inclusions weaken the structure

How to Evaluate Clarity When Shopping

When viewing emerald jewelry in person or online, consider:

• Does the stone appear lively and bright?

• Are inclusions distracting at normal viewing distance?

• Is colour even throughout the stone?

• Has treatment level been disclosed?

• Is certification available?

In practice, a balanced stone with medium to strong colour and moderate inclusions is often the most desirable choice for everyday jewelry. 

Care Considerations for Emerald Jewelry

Because many emeralds contain natural fissures and may be oil-enhanced, the proper care is important.

Recommended care:

• avoid extreme heat

• avoid ultrasonic cleaners

• avoid harsh solvents

• store separately from harder stones

• clean gently with mild soap and water

With proper care, emerald jewelry can be worn and enjoyed for generations.

Frequently Asked Questions

Are inclusions bad in emeralds?
No. Most natural emeralds contain inclusions. These are expected and only reduce value if they affect durability or transparency.

What is jardin in an emerald?
Jardin refers to the natural internal inclusions found in emeralds. These patterns are part of the stone’s natural formation.

Is an eye-clean emerald better?
Eye-clean emeralds are rare and can be valuable, but colour and overall appearance are usually more important.

Is oil treatment acceptable?
Yes. Minor oil treatment using cedar oil or palm oil is standard in the emerald trade and generally has minimal impact on value.

Is resin treatment bad?
Heavier resin treatment can reduce value and may indicate structural fragility. Disclosure is important.

Do Colombian emeralds have inclusions?
Yes. Colombian emeralds often contain inclusions, and this does not automatically reduce quality if colour is strong.

Final Thoughts

Emerald clarity should be evaluated differently than diamond clarity. Inclusions are part of what makes each emerald unique, and moderate inclusions are expected in natural stones.

When shopping for emerald jewelry, focus first on colour and overall presence, then evaluate clarity and treatment level. Gemstone certification and transparency around enhancements will help ensure you choose a stone that aligns with both quality expectations and long-term value.