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BAUNAT's Guide to Flawless Engagement Rings

At BAUNAT, we believe in the exquisite beauty of natural diamonds. We often describe our diamonds as 'flawless', a term that might appear elusive to some. However, 'flawless' or 'loupe clean' (LC) has a particular significance when it comes to diamonds and the engagement rings they adorn. ​

 

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What makes a diamond "flawless" and is it worth the investment for your engagement ring?

BAUNAT explains that "flawless" has a specific meaning in the diamond world, referring to stones that show no inclusions when magnified ten times. These rare gems sit at the top of the clarity scale within the 4Cs (Carat, Color, Clarity, and Cut). While flawless diamonds, especially D-color ones, are considered investment-grade with stable value, they come with a significant price premium – often double the cost of an SI1 diamond.

For engagement rings, the choice between flawless and eye-clean diamonds (which have inclusions visible only under magnification) depends on your priorities. If you're seeking visual beauty alone, an eye-clean VS2 or SI1 diamond appears virtually identical to a flawless one. However, if you view your ring as both a symbol of love and an investment, a certified flawless diamond might be worth considering.

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Deciphering 'Flawless' in the Diamond Sphere

The impeccable quality of BAUNAT's diamonds is determined by the universally recognised 4Cs – Carat (size), Colour, Clarity, and Cut. Each BAUNAT diamond is accompanied by a certificate from a globally renowned gemmological laboratory like GIA, HRD, or IGI.
Flawless diamond for an engagement ring - A large, flawless diamond, perfect for an impressive engagement ring
Interpreting 'flawless' in diamond clarity ranges from 'perfect' or 'flawless'. This indicates the diamond, when magnified ten times, reveals no visible inclusions. On the other end, we have diamonds with dark, strong inclusions. It's worth noting that in the highest clarity grade, a distinction is sometimes made between IF (internally flawless) and FL (flawless without any microscopic external scratches).
Often, 'flawless' diamonds are also labeled 'investment grade'. Especially in the D-grade colour range, flawless diamonds demonstrate high, stable value, making them a wise investment.

Too Flawless or Not: The Engagement Ring Conundrum

From an investment viewpoint, flawless diamonds leverage good returns. However, visually, a flawless diamond doesn't differ significantly from an 'eye-clean' stone. An 'eye-clean' diamond has inclusions visible through a loupe but not to the naked eye. An engagement ring adorned with an SI1-grade (small inclusions) or VS2-grade (very small inclusions) diamond is virtually indistinguishable from a flawless engagement ring.

Conversely, a flawless diamond can cost twice as much, if not more, than an 'eye-clean' one. Therefore, the decision to choose a flawless diamond engagement ring is subjective. If it's solely about pleasing aesthetics, a flawless diamond might inflate the cost without adding visible value. However, if you're after the crème de la crème, viewing your engagement ring as an investment, a flawless diamond becomes an attractive choice.

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How big is a diamond? Millimetres and how it looks on the hand

0.28 ct round  -  diameter approximately 4.3–4.4 mm; reads as a delicate solitaire, ideal for a subtle, everyday look and smaller finger sizes.

0.50 ct round  -  diameter approximately 5.0–5.25 mm; suits most wrists and is widely considered a comfortable everyday centre stone that balances presence with wearability.

1.00 ct round  -  diameter approximately 6.4–6.6 mm; the classic engagement-ring size that is readily visible from a distance while remaining practical for daily wear.

10.00 ct round  -  diameter approximately 14.0–14.3 mm; dramatically larger on the hand and best supported by a reinforced, bespoke setting and careful consideration of finger proportions.

Perceived size depends on more than carat weight: finger circumference, the ring’s setting profile, the presence of side stones and the diamond’s cut proportions all change how large a stone appears. For example, a thin band or halo setting can make a given millimetre diameter read larger on the finger, while a chunky shank can visually reduce perceived size. For very large stones (10 ct+), consult a specialist to discuss practical wearability and bespoke setting reinforcement.

Deciphering the Price Tag of a Flawless Diamond

The price and rarity of a diamond are determined not just by clarity but by all the 4Cs. According to Rapaport's reports, a flawless, colourless diamond costs almost double an SI1 diamond, and notably more than a VS2 diamond. The price difference is more significant for diamonds over 1 carat and the highest colour grades.

When flawless matters: shape and grade thresholds

Shape affects how clarity and colour show, so priorities shift by cut. For round brilliants, especially at larger sizes, put colour and clarity high on your list to protect brilliance; for very large rounds, D–E colour and VVS1–FL clarity are commonly chosen for an exceptional, investment-grade look. For emerald and other step cuts, clarity is the main concern because step facets reveal inclusions more easily; for these shapes we suggest VS2 or better for larger stones to keep an eye-clean appearance, with VVS/FL preferred for milestone sizes.

Cushion and oval cuts can hide some inclusions because of their faceting and shape; for these, an excellent cut and VVS–VS grades often balance visual impact and value. In short: rounds benefit from top colour and cut, step cuts need higher clarity, and fancy shapes demand a mixed approach. For very large stones, small grade differences create large price and visible shifts, so selecting per-shape thresholds helps target both appearance and long-term value.
Engagement ring flawless - A precious engagement ring with diamond
To wrap up, flawless diamonds, incredibly rare in nature, command a premium price. If you're in search of a luxury engagement ring, flawless or otherwise, and seek professional advice, the BAUNAT team is happy to be of service.  
Do you wish to explore more about our engagement rings? Dive deeper into our insightful BAUNAT blog.  

  • An Van Puyvelde

  • An Van Puyvelde - Order & Administration Manager

  • An supervises BAUNAT’s order processing and logistics, working closely with the internal order team to ensure a seamless customer experience. She plays a key role in coordinating production timelines and maintaining clear communication with clients throughout the entire process. With a strong focus on precision and reliability, An is dedicated to delivering each piece on time while keeping customers fully informed, contributing to BAUNAT’s high standard of service and customer satisfaction.

An supervises BAUNAT’s order processing and logistics, working closely with the internal order team to ensure a seamless customer experience. She plays a key role in coordinating production timelines and maintaining clear communication with clients throughout the entire process. With a strong focus on precision and reliability, An is dedicated to delivering each piece on time while keeping customers fully informed, contributing to BAUNAT’s high standard of service and customer satisfaction.