June Collective Gemstone Learning Center
Surface Reaching Inclusions in Natural Gemstones: What Buyers Should Know
Surface reaching inclusions are frequently misunderstood. Learn why these features can occur naturally, how they differ from ordinary surface damage, when they may affect durability and what thoughtful gemstone buyers should look for before deciding whether a stone is right for them.
Few descriptions create more immediate concern for a new gemstone buyer than the words surface reaching inclusion.
The phrase can sound as though a gemstone is cracked, damaged or somehow inferior simply because an internal feature intersects its polished exterior.
That conclusion is often too simplistic.
Natural gemstones are products of complex geological processes. Crystals grow in environments containing other minerals, fluids, gases, heat, pressure and changing geological conditions. During that history, a crystal may develop fissures, trap other materials, partially heal or incorporate structures that later intersect the surface when the rough is cut and polished.
Surface reaching is a description of where an inclusion meets the gemstone's exterior. It is not, by itself, a diagnosis of damage and it is not an automatic verdict on gemstone quality.
At the same time, that does not mean every surface reaching feature should be ignored.
Certain open fractures, large cavities or features positioned near vulnerable corners may deserve closer examination. Others are minor natural characteristics with little practical influence on beauty or wearability.
The key is learning to evaluate the actual feature rather than reacting to the terminology.
This guide explains what surface reaching inclusions are, why they occur, how they differ from damage, when they may influence durability and how collectors, jewelry buyers and designers can evaluate them more intelligently.
For a broader introduction to inclusions first, visit the Natural Gemstone Inclusions Guide .
What Does Surface Reaching Inclusion Mean?
An inclusion is an internal characteristic within a gemstone or a feature extending from the interior to the polished surface.
When an internal feature intersects the exterior of the finished gemstone, it may be described as surface reaching.
The terminology is descriptive.
It tells us where the feature is located.
It does not automatically tell us how deep it is, whether it is open, whether it affects durability, whether it is natural, whether it has been treated or whether it is visible without magnification.
Those questions require further observation.
Internal Inclusion
A characteristic completely enclosed within the gemstone without intersecting its polished exterior.
Surface Reaching Inclusion
An internal feature that extends to and intersects one or more polished surfaces of the gemstone.
Blemish
A characteristic confined primarily to the exterior, such as certain scratches, abrasions or polishing features.
Damage
A chip, break, abrasion or other condition resulting from cutting, setting, wear, impact or another event after formation rather than simply a natural internal characteristic.
Why Natural Gemstones Can Have Surface Reaching Features
A gemstone's polished shape is created long after the original crystal formed.
Before cutting, an internal fissure or mineral inclusion may be completely enclosed within the rough crystal.
When a cutter removes material to create facets, the polishing process can intersect that preexisting natural feature.
The feature then reaches the finished surface even though its origin predates the cutting of the gemstone.
Surface reaching features can also be related to natural fractures that formed during or after crystal growth.
Geological stress can create fractures. Mineral rich fluids may subsequently enter those spaces. Under appropriate conditions, parts of the fracture may heal naturally, leaving behind networks of tiny fluid inclusions or other structures.
These partially healed fissures can produce some of the most intricate microscopic scenes found in natural gemstones.
The fact that such a feature intersects the surface does not erase its natural geological origin.
Surface Reaching Does Not Automatically Mean Damaged
This is the most important concept in the entire discussion.
A buyer may see the words surface reaching fissure and immediately imagine a fresh crack spreading through the gemstone.
That is not necessarily what is being described.
A fissure may have existed in the crystal long before it was mined.
It may be partially healed.
It may extend only a short distance from one facet.
It may be positioned in a relatively protected part of the stone.
It may be nearly impossible to see without magnification.
It may have no meaningful effect on the gemstone's face up appearance.
Conversely, a different surface reaching fracture may be large, open and strategically positioned in a way that deserves concern.
The words alone cannot make that distinction.
The June Collective Perspective
Do not ask only whether an inclusion reaches the surface.
Ask what the feature is, where it is located, how extensive it is, whether it is open, whether it affects visual beauty and whether its position creates a meaningful durability concern for the intended use.
Surface Reaching Inclusions Versus Chips and Scratches
Natural inclusions and subsequent surface damage can sometimes appear similar in photographs, particularly when the image is strongly magnified.
They are not the same thing.
Natural Surface Reaching Inclusion
A natural surface reaching inclusion generally originates within the gemstone and intersects the polished exterior.
Examples can include fissures, mineral crystals, growth features or cavities associated with the natural crystal.
Scratch
A scratch is a surface feature created when another material abrades or marks the polished exterior.
It does not necessarily continue into the gemstone's interior in the way a fissure can.
Chip
A chip is an area where material has broken away from the gemstone.
Chips commonly occur along girdles, facet junctions, points or other exposed areas after cutting, setting or wear.
Abrasion
Abrasion can soften facet junctions or create numerous small surface marks through wear.
This is different from a natural internal characteristic intersecting the surface.
A magnified photograph can make a microscopic natural opening look dramatic. Always consider the actual scale of the gemstone and compare macro photography with normal viewing photographs and video.
Common Surface Reaching Features
Fissures
Natural breaks or separation features within the crystal that may intersect one or more polished facets.
Partially Healed Fissures
Fractures that underwent natural healing processes and may contain networks of fluid inclusions, negative crystals or fingerprint like patterns.
Feathers
A descriptive term often used for whitish or featherlike fracture features. Their importance depends on size, location and extent rather than the name alone.
Crystal Inclusions
A mineral crystal enclosed within the gemstone may intersect the polished surface after cutting.
Cavities
Open spaces can remain where a crystal, inclusion or part of the host material is absent. Cavities vary greatly in size and significance.
Growth Features
Structures associated with the original crystal growth may occasionally intersect the finished surface without representing later damage.
What Is a Partially Healed Fissure?
Partially healed fissures are among the most fascinating natural features a gemstone can contain.
A fracture can form within a crystal and later encounter geological fluids. As healing occurs, portions of the fracture can close while microscopic pockets of fluid remain trapped.
The resulting structure may resemble fingerprints, delicate feathers, brushstrokes, frost or branching patterns when viewed under magnification.
These features can represent natural geological healing rather than recent damage.
The degree of healing varies.
A largely healed internal fingerprint is different from a broad open fracture extending deeply through a gemstone.
Again, terminology alone is insufficient.
The individual feature has to be examined.
When Should a Surface Reaching Inclusion Concern a Buyer?
The most important factors are size, depth, position, orientation, openness, gemstone type and intended use.
| Feature | Usually Lower Concern | Deserves Closer Evaluation |
|---|---|---|
| Size | Small and localized | Large or extending through a significant portion of the stone |
| Position | Protected area away from exposed edges | Corner, point, thin girdle or proposed prong location |
| Visibility | Visible only under magnification | Strongly distracting face up |
| Opening | Minimal surface opening | Broad or clearly open cavity or fracture |
| Transparency | Little effect on transparency | Large reflective feature materially reducing transparency |
| Jewelry Use | Pendant or protected setting | High exposure everyday ring |
| Setting Location | Away from pressure points | Directly beneath or adjacent to a prong |
Location Matters as Much as Size
A relatively small inclusion can deserve more attention than a larger one if it occupies a vulnerable location.
Consider a pear shaped gemstone.
A fissure deep inside the broad rounded portion of the stone may present a different practical situation from a much smaller feature extending through the pointed tip.
Points and corners concentrate mechanical stress.
Likewise, a surface reaching feature directly beneath a proposed prong deserves more careful consideration because setting pressure may be applied in that location.
A similar feature positioned away from the setting may create little practical concern.
This is one reason gemstone durability cannot be judged from inclusion size alone.
The Gemstone Species Matters
Different gemstone materials respond differently to wear and mechanical stress.
Hardness, toughness, cleavage and internal structure all matter.
Hardness describes resistance to scratching.
Toughness describes resistance to breaking or chipping.
Cleavage describes the tendency of certain minerals to split along particular crystallographic directions.
A gemstone can therefore be relatively hard but still require thoughtful handling.
Surface reaching inclusions need to be interpreted within that larger durability profile.
Sapphire
Corundum is a durable gemstone material suitable for many jewelry applications. Natural sapphire commonly contains inclusions, including partially healed fissures.
A small surface reaching feature does not automatically make a sapphire unsuitable for jewelry, but its location and extent should still be evaluated.
Continue with: Natural Inclusions in Sapphire .
Tourmaline
Tourmaline can contain growth tubes, fluid inclusions, crystals and fissures. Included tourmaline can remain extremely beautiful, particularly in colors where fine color is prioritized over perfect clarity.
Because tourmaline has its own durability considerations, significant fractures near exposed areas should be assessed before setting.
Continue with: Natural Inclusions in Tourmaline .
Aquamarine
Fine aquamarine is generally valued for transparency, which means visible features can sometimes attract greater attention than they would in a more strongly included gemstone variety.
Surface reaching features can still occur naturally.
Continue with: Natural Inclusions in Aquamarine .
Spinel
Fine spinel can be remarkably transparent and brilliant. Crystals, healed fissures and other natural features can occur.
The significance of a surface reaching feature depends on its actual size, location and influence on the finished gemstone.
Continue with: Natural Inclusions in Spinel .
Sphene
Sphene is prized for intense dispersion and a distinctive play of spectral color, but it requires more careful wear than highly durable materials such as sapphire.
For that reason, the position of meaningful surface reaching features deserves careful consideration when sphene is intended for jewelry.
Continue with: Natural Inclusions in Sphene .
Tsavorite Garnet
Tsavorite can possess intense green color with excellent brilliance and may also contain natural crystals, needles and fissures.
As with other gemstones, inclusion location matters just as much as the mere presence of an inclusion.
Continue with: Natural Inclusions in Tsavorite Garnet .
Surface Reaching Inclusions and Gemstone Treatments
A surface reaching fracture has another important implication: it can provide a pathway through which clarity enhancing substances are introduced into a gemstone.
Oils, resins, waxes and glasses may be used in certain gemstones to reduce the visibility of fractures or cavities.
Emerald is one of the best known examples. Oils or resins can enter surface reaching fissures and make them less visually apparent.
Fracture filling is also encountered in other gemstone materials.
This is why the presence of a surface reaching fissure and the question of treatment are related but not identical.
A surface reaching inclusion does not automatically mean a gemstone has been clarity enhanced. It simply creates a possible pathway through which a filler could be introduced.
Determining whether a fissure contains oil, resin, glass or another filler may require magnification, specialized observation or laboratory analysis.
Treatment disclosure matters because treatment can affect value, care requirements and purchasing decisions.
Natural Feature Versus Treatment Versus Damage
| Description | What It Means | Buyer Consideration |
|---|---|---|
| Natural Surface Reaching Inclusion | A natural internal feature intersects the polished exterior. | Evaluate position, extent, appearance and durability. |
| Partially Healed Natural Fissure | A fracture experienced natural geological healing. | May be largely cosmetic or gemologically interesting depending on extent. |
| Filled Fracture | A substance was introduced into a surface reaching fracture to improve apparent clarity. | Treatment should be disclosed and may affect value and care. |
| Chip | Part of the gemstone has broken away. | Evaluate extent, location and whether repair or recutting is appropriate. |
| Scratch or Abrasion | Surface wear or damage rather than an internal geological feature. | Consider visibility, polish and whether refinishing is possible. |
How Magnification Changes What Buyers See
Modern gemstone photography can reveal extraordinary detail.
It can also make microscopic features appear visually overwhelming.
Consider a gemstone measuring 8 millimeters across.
If a macro photograph displays that gemstone across the width of a large phone screen, the image may represent many times the stone's actual visible size.
A tiny surface reaching fissure that is barely noticeable in normal viewing can appear dramatic in the photograph.
This does not mean the photograph is inaccurate.
It means the scale has changed.
That is why responsible gemstone evaluation should consider both magnified and normal viewing conditions.
When Buying Online, Compare
- Normal distance face up photographs
- Magnified photographs
- Video showing the gemstone in motion
- Side views
- Girdle and corner views where relevant
- Actual measurements
- Carat weight
- The seller's written inclusion disclosure
Can a Surface Reaching Inclusion Reduce Value?
Yes, but not automatically.
Value depends on how the feature affects the complete gemstone.
A tiny fissure near the girdle that is invisible face up may have relatively little influence on desirability.
A large reflective fracture running through the center of a transparent stone may have a much greater influence.
A feature that creates a genuine structural concern may affect value more significantly.
The rarity of the gemstone also matters.
Collectors may accept more inclusion in a rare, exceptionally colored gemstone than they would in a more readily available material.
Colored gemstone value is never determined by clarity alone.
Color, tone, saturation, cut, transparency, luster, carat weight, rarity, treatment, durability and overall beauty must be considered together.
Does a Surface Reaching Inclusion Make a Gemstone Less Natural?
No.
A naturally occurring fissure or crystal inclusion does not become less natural simply because cutting intersects it.
In some cases, these features are part of the evidence gemologists evaluate when studying a gemstone's growth history.
However, buyers should avoid a different oversimplification:
The presence of an inclusion alone does not universally prove natural origin.
Synthetic gemstones can possess their own characteristic internal features, and some treatment processes alter natural inclusions.
Correct identification relies on the complete body of gemological evidence.
Surface Reaching Features and Jewelry Setting
The intended jewelry design should be part of the inclusion evaluation before the gemstone is set.
A meaningful fissure positioned directly where a prong will apply force may require a different setting strategy.
A vulnerable point may benefit from greater protection.
A gemstone that requires more care may be better suited to a pendant or earrings than to an everyday ring.
The presence of an inclusion does not automatically eliminate the gemstone from consideration.
Instead, good jewelry design works with the architecture of the stone.
Prong Placement
Avoid applying unnecessary pressure directly over significant fractures or vulnerable areas whenever the design permits.
Protective Settings
Certain gemstones can benefit from designs that provide greater protection to edges, corners or points.
Jewelry Type
A pendant experiences substantially less impact than a ring worn every day.
Jeweler Communication
Meaningful natural features should be communicated to the jeweler before setting so the stone can be handled appropriately.
When Should You Pass on a Gemstone?
A surface reaching inclusion can become a reason to pass when its practical impact outweighs the qualities that make the gemstone desirable.
Examples can include a large open fracture extending through a structurally important portion of the gemstone, a vulnerable fissure directly through a point or corner, a cavity that materially compromises the edge, or a feature that significantly distracts from face up beauty.
There is also a price question.
A gemstone with a significant clarity characteristic should be priced in a way that reflects the complete quality picture.
A beautiful included gemstone at an appropriate price can be an excellent purchase.
The same gemstone represented and priced as though the characteristic did not exist may not be.
Disclosure and context matter.
When a Surface Reaching Inclusion May Be Completely Acceptable
Many surface reaching features are compatible with beautiful, wearable natural gemstones.
A feature may be perfectly acceptable when it is small, stable, unobtrusive, properly disclosed and positioned away from areas of significant mechanical stress.
It may also be acceptable when the gemstone possesses exceptional color, rarity or character that outweighs a modest clarity characteristic.
Collectors in particular may appreciate unusual natural features rather than viewing them only through the lens of perfection.
The goal is not to convince buyers that inclusions never matter.
The goal is to understand when they matter and why.
A Practical Buyer Checklist
Before Purchasing a Gemstone With a Surface Reaching Inclusion, Ask:
- Is the feature visible without magnification?
- Does it affect the gemstone's face up beauty?
- How deep does it appear to extend?
- Is the feature open at the surface?
- Where is it located?
- Does it intersect a corner or point?
- Is it near a thin girdle?
- Would a prong or bezel place pressure on it?
- Does it materially reduce transparency?
- Does it create strong reflections inside the stone?
- Is it primarily cosmetic?
- Is this amount of inclusion expected for the gemstone variety?
- Is the gemstone intended for a ring, pendant, earrings or collection?
- Has any clarity enhancement been disclosed?
- Would independent laboratory testing be appropriate for the value of the gemstone?
- Does the price appropriately reflect the complete gemstone?
Why Disclosure Matters
Natural gemstones do not need to be presented as flawless objects to be desirable.
Buyers simply need meaningful information.
A clear disclosure that a gemstone contains a surface reaching inclusion gives the buyer an opportunity to evaluate the feature within the context of the stone.
That is more useful than either hiding the inclusion or using alarming language without explanation.
Transparency creates better buyers and better long term relationships between collectors, jewelers and gemstone sellers.
Frequently Asked Questions
Are surface reaching inclusions normal in natural gemstones?
Yes. Internal features can naturally intersect a gemstone's surface, and cutting can expose inclusions that were originally enclosed within the rough. Their importance varies according to type, extent and location.
Does surface reaching mean the gemstone is cracked?
Not automatically. A surface reaching feature may be a fissure, partially healed fracture, mineral inclusion, cavity or another natural characteristic. The actual feature must be evaluated rather than relying on the terminology alone.
Does a surface reaching inclusion mean the stone will break?
No. Many surface reaching inclusions do not create a significant structural problem. Large open fractures or features positioned in vulnerable areas can present greater risk and deserve closer examination.
Is a surface reaching inclusion the same as a chip?
No. A chip represents material that has broken away from the gemstone. A natural internal feature can intersect the surface without being a chip.
Can surface reaching inclusions be filled?
Yes. Some clarity enhancement treatments introduce oil, resin, glass or other materials into surface reaching fissures or cavities to make them less visible. Treatment should be disclosed when known.
Does every surface reaching fissure contain filler?
No. A natural surface reaching fissure can be completely untreated. The presence of a surface pathway does not by itself prove clarity enhancement.
Can a gemstone with a surface reaching inclusion be used in a ring?
Often, yes. The answer depends on the gemstone material, the inclusion's location and extent, the setting design and how the ring will be worn. Significant features should be discussed with the jeweler before setting.
Should I avoid all gemstones with surface reaching inclusions?
No. Evaluate the complete gemstone. Color, beauty, rarity, transparency, durability, setting plans and price all matter. A small unobtrusive natural feature may have little practical importance.
Can surface reaching inclusions help identify a natural gemstone?
Certain inclusion scenes can provide useful gemological evidence, but the presence of an inclusion alone should not be treated as universal proof of natural origin. Identification should consider the complete set of observable and testable characteristics.
The June Collective Perspective
Natural gemstones are not manufactured objects required to emerge from the earth internally perfect.
Their crystals developed within geological environments that changed over time.
Fissures formed.
Minerals became enclosed.
Fluids were trapped.
Some fractures naturally healed.
Eventually, those crystals were mined, cut and polished, sometimes exposing features that had existed within the rough long before the first facet was placed.
That is why the phrase surface reaching inclusion should begin an evaluation, not end one.
Look at the location.
Look at the depth.
Look at the visibility.
Consider the gemstone species.
Consider the jewelry design.
Consider whether treatment is present.
And most importantly, consider the complete gemstone.
At June Collective, gemstones are evaluated in our small in office gemological workspace using standard gemological tools and observation to help us describe the stones we offer accurately and transparently. When advanced identification, treatment determination or other laboratory analysis is appropriate, an independent gemological laboratory remains the appropriate authority.
Natural characteristics should be understood rather than automatically feared.
A surface reaching inclusion can simply be one chapter in the geological story of a natural gemstone.
Continue Exploring the June Collective Gemstone Learning Center
Begin with the complete cornerstone guide: Natural Gemstone Inclusions Guide .
Then explore the individual gemstone inclusion guides:
Natural Inclusions in Sapphire
Natural Inclusions in Tourmaline
Natural Inclusions in Aquamarine
June Collective
Curated Natural Gemstones & Fine Jewelry
Natural gemstones selected with an appreciation for color, character, craftsmanship and the individuality created by nature.
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