By Callum 
When shopping for diamonds, inclusions are often the silent deal-breakers. They may not always be visible to the naked eye, but their impact on beauty, durability, and value is undeniable. Among these imperfections, some are especially detrimental—and one, in particular, deserves more attention: the bearded girdle.
This guide walks through the most problematic inclusions to watch out for—and why Rare Carat is the discerning buyer’s best ally when navigating them.
Bearded Girdles: The Hidden Danger to Shine
Bearded girdles occur during the cutting process when microscopic feather-like cracks emanate from the girdle, the diamond’s outer border. Although subtle, they can disrupt light performance and wearability.
Buyers might miss them easily, hence bearded girdles are among the most troublesome inclusions. They have a tendency of muting the luster of even good-cut stones. For more information, visit this engaging post from Rare Carat on whether or not you should purchase diamonds with bearded girdles.
Large Feathers: Not Just a Cosmetic Issue
Feathers—internal cracks—are routine inclusions, but location and size are important. Big feathers close to the surface can compromise the structural integrity of the stone, particularly if positioned close to the girdle or table.
These fractures, when viewed under a gemologist’s loupe, can resemble jagged lightning bolts. When exposed or close to a pressure point, they will potentially get worse over time. Diamonds with such feathers are frequently marked during a Rare Carat gemologist inspection.
Black Carbon Spots: Visible to the Naked Eye
Carbon inclusions—especially black ones—can be seen without magnification and immediately impact a diamond’s appearance. Unlike feathers or clouds, black spots are stark and noticeable.
Their stable position tends to make it impossible to conceal with a prong setting. Even though a diamond may be rated SI1 or SI2, black carbon along the table facet can be visually objectionable. Rare Carat’s AI-based system identifies such imperfections in no time, suggesting alternatives.
Cavity Inclusions: Susceptible to Dirt and Damage
Cavities are surface-reaching cavities that not just spoil beauty but also draw in dirt and oil. Such inclusions can be a maintenance issue and can further deteriorate if affected.
Rare Carat protects customers from diamonds with open cavities using advanced inclusion mapping and complimentary reviews by trained gemologists.
Clouds: The Hidden Clarity Killers
Clouds are groups of pinpoint inclusions that, if heavy enough, will render the diamond hazy. They’re particularly ominous in SI or I-clarity stones.
As listed on a certificate, clouds may seem insignificant, but their effect can differ. That’s where Rare Carat excels—providing clarity suggestions based on real-world visual performance, not simply paper grades.
Etch Channels: Natural But Not Beautiful
These tubular characteristics usually develop during growth in nature. Although technically natural, they detract from appearance when on or near the pavilion, where they reflect inward.
Their elongated scratch-like structure is unpleasant, and they often resemble feather-like cracks under a microscope. Rare Carat expert opinion separates benign from dangerous channels.
Needles and Internal Graining: Subtle Yet Detrimental
Needles are long, thin crystals that are either visible or not. Internal graining appears as pale lines or streaks. Although structurally harmless, they can impact the optical symmetry and light return of the diamond.
Rare Carat’s artificial intelligence engine assesses the effect of such inclusions on diamond brilliance, providing a fuller picture than standard grading reports.
Why Rare Carat is the Smart Choice for Discerning Buyers
Rare Carat has transformed the diamond buying experience. In contrast to most other retailers, who force in-house stock, Rare Carat collects more than a million diamonds from qualified sources—providing transparency, AI-driven price scoring, and GIA-certified gemologist reviews.
Top Value Features:
- AI-driven diamond grading and price comparison
- GIA-certified gemologist free reviews
- Full-service assistance with resizing, returns, and secure checkout
- 30-day money-back guarantee
- Free insured shipping and returns
- 1-Year Free Resizing (with extended protection options)
- Lifetime warranty options available
- Rated 4.9 on Google Business and Trustpilot
From cutting-edge tech to human know-how, Rare Carat provides peace of mind in every diamond purchase.
Inclusions might be a part of a diamond’s natural history, but not all blemishes are made equal. Whether it’s a bearded girdle undermining brilliance or black carbon spots interfering with clarity, knowing what to look out for—and having expert guidance—is vital.
Owing to its robust mix of technology, expert knowledge, and customer-oriented policies, Rare Carat makes sure that every purchaser receives a diamond that’s deserving of their special moment.