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A Guide to D Flawless Diamonds


Buying a D Colour Flawless or Internally-Flawless Diamond


D Flawless diamonds are prized for their exceptional colour and clarity. To be graded D Flawless, diamonds achieve the highest possible colour and clarity grade. Under very strict laboratory conditions, only the finest, whitest diamonds are certified D colour and IF clarity. 

The Difference Between D IF and D Fl Diamonds


The difference between D IF diamonds and D FL diamonds can be explained by the meaning of the clarity grades FL and IF. As we have already discussed, IF stands for Internally Flawless. In contrast, FL stands for Flawless. To explain, IF diamonds may feature surface blemishes. However, FL diamonds have no marks externally or internally. As a result, FL diamonds are rarer and more expensive. 


In the following video, we reveal the incredible beauty and rarity of an absolutely Flawless diamond. 

Why are D IF diamonds so much more expensive?


D IF diamonds is so much more expensive than other grades because of the rarity of high colour and high clarity diamonds. Experts determine diamond value by the 4 C's of diamond grading - colour, clarity, carat weight and cut. D colour is the rarest and best whiteness. Furthermore, IF stands as the rarest clarity grade. A very small proportion of the World's diamonds achieve a colour and clarity grade of D IF.

Buying a D colour IF clarity diamond


If you're considering the purchase of a D colour IF clarity diamond, we are happy to source any diamond. Our diamond concierge service links to a huge diamond trading network across the World. Please get in touch with us for more guidance on finding the perfect D Internally Flawless diamond. 


Finding a suitable jewellery design for your diamond


A bespoke setting for a flawless diamond pendant.

Owing to the expense and rarity of the finest diamonds, many of our clients choose a bespoke jewellery design rather than an existing design for their diamonds. As part of our service, we created finished settings for diamonds we supply and diamonds supplied by other organisations. For example, the following flawless floating diamond necklace was created to showcase a D colour, Flawless 0.56-carat diamond certified by GIA. 

Minimum Sizes for D colour IF clarity diamonds


Please note that there are very few certified diamonds below 0.30cts achieving D colour and IF clarity. We frequently receive orders for D IF 0.25cts diamonds. If diamonds are unavailable at this size, we will contact you to advise on alternative diamonds close to this colour and clarity combination. 

Are D IF diamonds certified?


Never accept a D colour IF clarity diamond without an internationally recognised diamond grading certificate. Laboratories including GIA, IGI and HRD provide the assurance of accurate grading. Buyers should insist upon a diamond grading certificate for their diamond. GIA certified diamonds typically include the certificate number laser inscribed on the outer girdle of the diamond. 


The following GIA diamond grading certificate shows a typical report for a D Flawless diamond. 

Ethical D Flawless diamonds. 


It may be possible to source a D IF diamond with a specific origin. We regularly source CanadaMark diamonds with 100% traceability back to the mine. In addition, CanadaMark diamonds provide the additional assurance that the stone originates from 100% ethical mines. Please read our information on CanadaMark diamonds. Due to the high colour and clarity of CanadaMark rough diamonds (from the Ekati and Diavik mines), it is very likely we can source an ethical CanadaMark diamond is D colour IF clarity. 

A note on Flawless diamond engagement rings


If you're considering a Flawless diamond engagement ring, there are two main reasons why many buyers select this option within our engagement rings section of the website. Firstly, some buyers think it necessary to choose this option for a clear looking diamond. Other buyers seek D colour and IF clarity specifically for the very best colour and clarity combination. Please remember that it is not necessary to choose IF clarity for a visibly clear diamond. We recommend VS1 clarity for this reason.