Imperfect Diamonds & Flaws in Engagement Rings: Do People Like Them?
A gemmologist with decades of experience and multiple qualifications, Eddi revels in creating unique jewellery designs with his clients. Influenced by his time in Glasgow, NYC and South America, he brings a wordly perspective in his approach to jewellery design.
Imperfect diamonds are often misunderstood. While flawless diamonds are exceptionally rare, most natural diamonds chosen for engagement rings contain subtle diamond imperfections formed during their growth deep within the Earth.
These natural characteristics are part of what makes every diamond unique.
Rather than seeing these natural characteristics as undesirable diamond flaws, many people appreciate them as evidence of a diamond's authentic origin. Minor inclusions are a normal part of a natural diamond and are often invisible without magnification, while heavier inclusions can affect a diamond's brilliance, beauty and durability. Understanding the difference helps you choose an engagement ring diamond that perfectly balances appearance, quality and value.
In this article
What is an "imperfect" diamond? (inclusions vs. blemishes)
An “imperfect” diamond contains natural characteristics known as inclusions and blemishes.
Diamond inclusions are the internal features, such as natural minerals or fractures, that formed deep within the Earth as the diamond grew. These geological fingerprints make every diamond unique, ensuring no two stones are ever exactly alike.
Diamond blemishes are surface-level marks, such as scratches or nicks, that occur during cutting, polishing, or everyday wear. While inclusions are part of a diamond's natural story, blemishes can develop over time and contribute to its overall clarity, helping reveal each diamond's individual characteristics.
The rise of "perfectly imperfect" diamonds in fine jewellery
The appreciation of “perfectly imperfect” diamonds reflects an interest in individuality in fine jewellery. Rather than seeking flawless perfection, couples recognise that minor diamond imperfections are a natural part of a diamond’s formation and can reveal its unique story and origins.
These natural characteristics help make every diamond one of a kind, with each stone carrying its own unique story. From vintage-inspired designs to contemporary engagement ring styles, couples are choosing diamonds that feel personal while still prioritising quality, colour, clarity and lasting beauty.
However, while subtle inclusions are a normal feature of many natural diamonds, heavier diamond flaws can affect a stone’s brilliance, sparkle and overall beauty.
A shopper’s guide to diamond inclusions
Almost all natural diamonds have natural characteristics – these are part of what makes each stone unique. The key is knowing which imperfections are harmless features and which diamond flaws may affect durability, brilliance or beauty. Some buyers choose to compromise on diamond clarity to achieve a larger carat diamond at a better price, making certain inclusions a smart saving opportunity when they don't impact the diamond's appearance.
When comparing diamonds, shoppers consider the 4Cs: cut, colour, clarity, and carat. While GIA grading certificates include detailed inclusion maps, these diagrams are highly magnified and simply show a diamond’s natural characteristics. Below, we'll explore which inclusions are worth paying for and which affect an imperfect diamond’s overall beauty.
| Inclusion type | What it actually is | Visual impact | The verdict: Buy or avoid? |
|---|---|---|---|
| Pinpoints | Microscopic mineral deposits trapped inside the diamond during its formation. | Look like tiny, invisible-to-the-eye specks under magnification. | BUY: Virtually harmless. Single pinpoints do not affect sparkle or structural integrity and are an excellent way to save money on clarity. |
| Needles | Long, ultra-thin needle-like crystal structures. | Look like tiny white hairs or lines. Highly discreet. | BUY: Almost always safe. Unless they are clustered directly under the table facet, needles are a highly acceptable imperfection. |
| Crystals / minerals | Solid mineral droplets trapped inside the growing diamond. | Can appear as white, translucent, or dark black spots. | PROCEED WITH CAUTION: Buy if they are small, translucent or positioned near the edge where a prong can hide them. Avoid if they are large, black, and sitting directly under the central table facet (the "centre-stage" look). |
| Clouds | A dense cluster of microscopic pinpoints grouped close together. | Can create a localised hazy, foggy, or milky patch inside the stone. | PROCEED WITH CAUTION: Buy if they are tiny, faint, and off-centre. Avoid large, dense clouds that cover the table, as they scatter light and leave the diamond looking "milky" or lifeless. |
| Twinning Wisps | Twisted, ribbon-like streaks formed by crystallisation distortions during growth. | Look like swirling, flat, or hazy lines inside the diamond. | PROCEED WITH CAUTION: Buy if they are faint and located in VS2/SI1 stones. Avoid if they are heavy and dense enough to dull the diamond's overall sparkle and transparency. |
| Feathers | Microscopic internal fractures or cracks within the diamond's structure. | Look like delicate, white, feather-like patterns. | AVOID: (Highly Situational) Buy only if they are small, internal, and completely enclosed. Avoid if they are large, surface-reaching, or sit near the fragile outer edge (girdle), as a hard knock can cause the diamond to split or chip. |
| Cavities / chips | Gaps or pockets left behind when an internal crystal falls out, or physical notches from impact. | Look like deep holes, pits, or jagged indents on the diamond's surface. | AVOID: These compromise the diamond's structural integrity. Cavities actively trap dirt and look dark, while chips have a high risk of spreading and cracking the stone during daily wear or ring-setting. |
How do flaws affect a diamond's brilliance?
Not all diamond flaws affect its sparkle. In many cases, tiny pinpoints or small inclusions are invisible to the naked eye and have little to no impact on a diamond's brilliance.
A well-proportioned diamond cut allows light to enter and reflect throughout the stone, preserving the stone's sparkle despite these minor natural imperfections formed during the diamond’s growth.
However, larger or more densely grouped inclusions can interfere with the way light travels through the diamond. Heavy clouds or large dark crystals positioned beneath the table facet scatter or block light, creating a hazy, "milky" appearance that reduces brilliance.
This is why the size, type and location of an inclusion are often more important than simply the clarity grade of the diamond alone.
Design your one-of-a-kind ring with Queensmith
Whether you're searching for a classic eye-clean diamond or a stone with natural character, choosing the right diamond is about finding the balance that suits your style and priorities.
Every diamond is unique, and understanding its natural characteristics helps you choose a stone you'll love for a lifetime.
At Queensmith, our in-house gemmologists carefully hand-inspect every diamond to ensure it is not only visually beautiful but also structurally sound. From subtle inclusions that offer excellent value to diamonds with distinctive colour or character, we'll help you find a stone that matches your vision with complete confidence. Minor inclusions are a natural part of a diamond’s story, while our experts ensure any characteristics do not compromise its brilliance, sparkle or durability.
If you're ready to create your perfect engagement ring, visit one of our Queensmith showrooms to explore our hand-selected diamonds in person, or speak with our design team about designing a bespoke engagement ring that's uniquely yours.
Don't know where to start?
Online or in-person, our jewellery experts will guide you through every step – giving you the confidence to feel great about your ring.
Imperfect diamonds FAQs
Do you have additional questions? No problem, let us help you through the process
Most diamond inclusions are completely harmless, but any diamond flaws that affect the stone’s structure should be avoided. Surface-reaching feathers near the girdle, deep cavities and heavy bearding can increase the risk of chipping, splitting or trapping dirt, making them less suitable for everyday wear.
Many diamond imperfections are perfectly acceptable, especially if they are "eye-clean" and cannot be seen without a 10x jeweller's loupe.
Tiny pinpoints and needles rarely affect a diamond's appearance, while small inclusions that don't impact brilliance or durability can be a great way to find excellent value.
Natural diamonds often contain subtle imperfections that reflect their unique formation and origins. While most buyers prefer eye-clean diamonds, minor inclusions and natural diamond colour variations can add individuality without affecting beauty or sparkle. However, heavier inclusions or noticeable colour can impact a diamond’s appearance, brilliance and value.
Do you have additional questions? No problem, let us help you through the process