GBP
UK
Select Page

Crafted By Infinity

“Crafted by Infinity Diamonds appear bigger, whiter and cleaner than other diamonds of identical carat weight, color and clarity.”

Crafted By Infinity

“Crafted by Infinity Diamonds appear bigger, whiter and cleaner than other diamonds of identical carat weight, color and clarity.”

 

Why CBI Diamonds?

 

Paramount quality

CBI produces the highest quality diamond cuts, engaging their passion and expertise to enhance all the natural assets of a diamond, making your diamond appear bigger, white and cleaner than diamonds of identical carat, colour and clarity.

Investment in the future

Exceeding known metrics, CBI diamonds are cut with the future in mind. Current internationally agreed cut grades are wide, allowing for enormous variation. With advances in technology and consumer knowledge the experts at CBI see a future where cut will be reported in finer detail meaning truly excellent cuts and high-performance diamonds are elevated in value above diamonds currently achieving the very minimum standards for the grade.

Exclusivity

Stepping away from the modern demands of mass production, CBI produces a limited stock of just 1000 diamonds a year, allowing them to prioritise precision and consistency above all else.

About CBI

CBI are trailblazers in diamond cut

CBI produce diamonds which use advanced technology and expert knowledge to maximise their visible carat, colour and clarity.

CBI look beyond the certificate

They are leaders in diamond cutting and education and have developed their own, regimented standards which prioritise diamond performance and consistency.

From fine beginnings

At CBI they know that the best quality cut diamonds can only be achieved with the best quality source material. The uncompromising standards of a CBI diamond promises high performance and consistency, guaranteed to give your diamond superior scintillation, dispersion, brightness and contrast

Rarity vs Quality

When assessing diamonds, the universally accepted grading system takes into account the Four Cs <link> but these can be separated into two value factors. A diamond’s rarity and diamond’s quality.

Rarity

When assessing diamonds, the universally accepted grading system takes into account the Four Cs <link> but these can be separated into two value factors; a diamond’s rarity and diamond’s quality. Rarity describes the fixed and unchangeable characteristics of a diamond. Diamonds of high size, colour and clarity command high prices because these characteristics are rare.

Quality

When it comes to cut, the level of quality is in our hands. Cut is dictated by the technology, skill and passion of the diamond cutter. The joy or disappointment experienced when looking at your diamond can be a direct result of just how expertly it was cut.

Brightness

Finely cut diamonds tend to appear BRIGHT in a broad variety of lighting environments.

Fire

Fine makes tend to exhibit large amounts of FIRE when illuminated in fire-friendly lighting environments.

 

Leakage

Fine makes do not have excessively large areas of light LEAKAGE.

Contrast

Fine makes will have enough dark/light CONTRAST to be interesting, but not too much dark as to impact the brightness of the stone.

Proportion factors

Weight Ratio. Finely cut diamonds achieve a high level of performance without using excessive weight.

Durability. Fine makes are resistant to chipping.

Tilt. Fine makes do not exhibit the “fish-eye” effect.

Girdle. Fine makes do not have excessively thin or thick girdles, mostly due to durability/weight ratio concerns.

Culet. Fine makes do not have an excessively large culet.

(source AGS)

Finish factors

Polish. Finely cut diamonds should have a polish which does not interfere with light return. 

Symmetry. A finely cut diamond should have perfectly aligned and shaped facets. Traditional diamond grading reports on the average symmetry throughout the stone. Not satisfied with this CBI makes sure that every individual facet is cut to their exacting standards. 

CBI Diamonds FAQ

 

Are CBI diamonds more expensive than normal diamonds?

CBI makes no apologies for the small premium required to invest in one of their diamonds. CBI diamonds use the finest starting material, the most highly skilled cutters and most advanced technology, prioritising cut results throughout. Executing the calculated designs of their diamonds also means that they yield less carat weight from a rough diamond compared to an inferior cut, which makes the process of creating perfection more costly.

Are CBI diamonds a good investment?

Investment diamonds make up a very small proportion of diamonds traded and when creating an engagement ring, investment should never be a primary consideration. You’re probably looking to create an engagement ring as a symbol of love and commitment, not with the intention of selling it down the line. 

What’s the difference between CBI and Excellent/ Ideal cut diamonds?

Looking beyond a diamond certificate, CBI diamonds give you the security that your stone has been cut to a refined set of standards. Of the diamonds which are graded as Excellent even by a reputable grading laboratory, you can expect there to be significant and visible variation in light performance due to the wide guidance of this criteria. Until grading laboratories report on brightness, fire, leakage and contrast, choosing a specialist diamond from a brand committed to high performance is your best guarantee.

Why don’t diamond certificates report on light performance?

The cynical answer would be because they don’t want to. Diamonds have historically been cut to enhance their value according to a set of goal posts dictated by existing diamond grading criteria. If grading laboratories alter the criteria for cut it would mean that stocks of diamonds currently classified as the best possible cut, could be downgraded at a financial loss. A less cynical answer could be that certificates just don’t report on light performance yet. Growing markets such as China have already seen the demand for higher performing diamonds and as the market evolves reporting should catch up.

Live Loose Diamond Search

 

Find a diamond
Show me diamonds around £
Collections:
Shape
Carat Weight
Cut
Colour
Clarity

Type



Loading diamonds...

Shape explained

Click TODO to learn how to choose a great round diamond.

Carat weight explained

While often confused with the size, carat weight is actually a unit that measures a diamond’s weight. When choosing a diamond, you should consider all 4 Cs to find a beautiful balance.

Cut explained

Applicable to round diamonds only, a cut grade refers to the balance of proportion, symmetry and polish achieved by the diamond cutter. Cut has the greatest influence over a diamond’s overall brilliance, with excellent and very good cut diamonds having the highest light return.

Colour explained

White diamonds can have a colour grade from D (colourless) to Z (light yellow). Colour grades D-F are colourless and icy white and grades G-I are nearly colourless, with distinctions so subtle, most are indistinguishable to the untrained eye. We offer I colour grades and above.

Clarity explained

When diamonds are formed deep in the earth, they develop natural birthmarks. These slight irregularities are known as ‘clarity characteristics’. These may or may not be visible to the naked eye depending on their size, quantity or placement which is why it’s important to consider clarity when choosing your diamond.

Polish explained

Polish refers to the smoothness of the exterior of a diamond. We offer very good or excellent polish. This means that any marks that may appear on the diamond are difficult, or very difficult to locate under 10x magnification.

Symmetry explained

Symmetry refers to the angles to which the facets are aligned. We offer very good to excellent symmetry which means any symmetry defects are extremely difficult to see under 10x magnification or no defects are visible under 10x magnification.

Depth explained

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.

Table explained

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.

Fluorescence explained

Natural diamonds will emit a fluorescent glow when exposed to ultraviolet light, but their appearance in natural light is not affected. Diamonds with none or a faint fluorescence are rarer than those with a strong or very strong fluorescence. We offer diamonds with none, faint, medium or strong fluorescence grades.

Report explained

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.

Type explained

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.

Ratio explained

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.

AS SEEN IN

TrustPilot Reviews

“The ring arrived in good time this morning. It is beautiful and exactly as I had hoped it would be. Thank you for everything you have done,”

Jacob

“Thank you! It went really well and she loves the ring!! I dropped it in her glass of procecco!”

Sarah

“Thanks so much, I really appreciate the assistance given through this process. The wedding ring arrived and Kelly loves it.”

Rob

“The process was very exciting and loved everything about the final ring!”

Jason