Natural Diamond Prices – January 2025
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We at PriceScope believe that diamonds are truly one of nature’s wonders. Formed under intense pressure and heat over billions of years. While some rare diamonds are flawless, most feature inclusions, internal characteristics, or “beauty marks” that make each diamond unique. These inclusions can affect the appearance, value, and durability of a diamond. In this guide, we’ll explore 15 common diamond inclusions through visuals and concise descriptions, highlighting how these features contribute to a diamond’s story.
1. Crystals
Visual: Image of diamond with crystal inclusion
Crystals are minerals trapped within a diamond during its formation. These can appear as tiny dots or larger, visible shapes. Some are colorless, while others, like garnet or spinel, add unique hues.
Image Source: Whiteflash
2. Clouds
Visual: Image of cloudy inclusion under magnification
Clouds are groups of minute pinpoint inclusions clustered together. They may slightly affect a diamond’s transparency but are often invisible without magnification.
Image Source: Whiteflash
3. Feathers
Visual: Microscopic view of feather inclusion
Feathers are small fractures inside the diamond. While most are harmless, larger ones near points or edges can increase the risk of chipping.
Image Source: Whiteflash
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4. Twinning Wisps
Visual: Image of wispy inclusions with annotated labels
Twinning wisps occur when a diamond crystal undergoes growth distortions. They appear as streaky or ribbon-like patterns, often enhancing a diamond’s uniqueness.
Image Source: Whiteflash
5. Pinpoints
Visual: Diamond with pinpoint inclusions highlighted
Pinpoints are tiny spots often invisible to the naked eye. When clustered, they can form clouds that may impact transparency.
Image Source: Whiteflash
6. Graining
Visual: Image showcasing graining in a diamond
Graining appears as faint lines or waves caused by irregularities in the diamond’s crystal structure. It can affect brilliance in extreme cases.
Image Source: Whiteflash
7. Indented Naturals
Visual: Magnified view of an indented natural on the girdle
Indented naturals are parts of the rough diamond left untouched during cutting. They often occur near the girdle and minimally affect clarity.
Image Source: Whiteflash
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8. Cavities
Visual: Enlarged view of a cavity inclusion
Cavities are small holes or depressions on the diamond’s surface, often resulting from crystals being dislodged during cutting.
Image Source: Whiteflash
9. Knots
Visual: Knot inclusion seen on diamond surface
Knots are crystals that reach the surface of a diamond. They may impact polishing and require careful examination during setting.
Image Source: Whiteflash
10. Chips
Visual: Image of a chipped girdle under a microscope
Chips are surface blemishes caused by wear or handling. Although not technically inclusions, they can weaken the diamond at vulnerable points.
Image Source: Unknown
11. Needles
Visual: Needle inclusion magnified
Needles are thin, elongated crystal inclusions. They’re typically white or transparent and rarely affect clarity grades.
Image Source: Whiteflash
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12. Laser Drill Holes
Visual: Magnified view of laser drill hole
Laser drill holes are intentional inclusions created to remove dark internal blemishes. These do not enhance clarity grade but can make inclusions less noticeable.
Image Source: Whiteflash
13. Bearding
Visual: Bearded girdle under high magnification
Bearding refers to tiny hairline fractures around the girdle caused during cutting. It’s usually polished away to maintain durability.
Image Source: Whiteflash
14. Etched Channels
Visual: Image of an etched channel inclusion
Etched channels are linear cavities formed by chemical processes during a diamond’s growth. They can trap dirt and affect the diamond’s appearance over time.
Image Source: GIA
15. Reflectors
Visual: Diamond with reflector inclusion showing multiple reflections
Reflectors are inclusions positioned where internal reflections magnify their visibility. These are not additional inclusions but mirrored images of existing ones. Labs like GIA tend to base their main grading on the actual inclusion and only “take the reflections” into further account.
Image Source: Whiteflash
Understanding Inclusions: Key Takeaways
- Clarity Grading: Inclusions determine a diamond’s clarity grade, impacting value and appearance.
- Durability: Surface-breaking inclusions like feathers or cavities may pose risks in certain settings.
- Transparency: Dense inclusions such as clouds or wisps can slightly reduce brilliance.
Choosing the Right Diamond
While inclusions are common, their visibility and impact depend on size, location, and type. Always inspect diamonds under magnification or consult an expert for guidance. For eye-clean options, VS1 or VS2 clarity grades are popular choices, balancing overall appearance and budget.
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Frequently Asked Questions
1. What are diamond inclusions, and should I be concerned about them?
Diamond inclusions are internal characteristics formed naturally during a diamond’s natural creation. While they affect clarity grades, most inclusions are microscopic and don’t impact a diamond’s appearance or durability. Concerns typically arise with large or surface-breaking inclusions.
2. What is an "eye-clean" diamond, and how do I know if a diamond meets this standard?
An “eye-clean” diamond has no visible inclusions when viewed with the naked eye from a normal distance (approximately 10 inches). It’s important to clarify the vendor’s definition of “eye-clean” and ask for detailed images or videos of the diamond.
3. Can diamond inclusions affect durability?
Certain inclusions, like large feathers, cracks, or surface-breaking inclusions, can pose a slight durability risk, especially near thin edges or points. However, most inclusions in well-cut diamonds are stable and do not compromise wearability.
4. Are diamonds with lower clarity grades less beautiful?
Not necessarily. Diamonds with inclusions in lower clarity grades (like VS2 or SI1) are often still visually stunning, as many inclusions are invisible to the naked eye. A well-cut diamond can outshine a higher-clarity diamond with a poor cut.
5. How can I ensure I’m choosing the best diamond for my budget regarding inclusions?
Focus on diamonds in the VS2 to SI1 clarity range, where inclusions are minimal and often invisible without magnification. Always review high-resolution images, videos, and lab reports to make an informed decision. Consult with a trusted gemologist if needed.
Closing Thoughts
Diamond inclusions are natural reminders of their formation journey. With proper understanding, they can guide buyers toward choosing a diamond that balances personal preference, aesthetics, and budget.
