The Chalfen Promise

Diamond quality is not what you think.


Not all diamonds are the same and their beauty cannot be determined from the certificate alone. The reason for this is that ‘a good diamond cutter does not cut good diamonds’. Sounds strange at first until you understand why.

The Chalfen Promise
Jewellery Design

The most significant attribute that determines a diamond’s value is its weight in carats. This means that the best diamond cutters will try to save as much weight from the original rough as possible when polishing the diamond, regardless of whether that makes the diamond sparkle just a little less.

This sparkle, sometimes called scintillation, is created when a diamond’s cut forms a prism. This prism allows light to enter a diamond through the top and break up into red, blue, yellow, orange and white light, whilst bouncing around the internal mirrors created when its facets were polished.

Diamond Selection
Diamond Cut

Every facet plays its role in creating this prism, from its angle and shape to its symmetry. Every tiny amount of weight saved by stretching a facet or changing an angle will reduce the sparkle, as either the light doesn’t break up or leaks out the bottom of the stone.

With over 100 years’ experience, Chalfen of London believes the quality of a diamond should not be measured by its colour and clarity alone but rather the amount of sparkle that the diamond exhibits. This is impossible to read from the information written on a diamond’s certificate, even under the title cut grade.

Chalfen of London promises that every diamond has been selected for sparkle by eye, whether certificated or from one of our two house diamond ranges. After all, it is this sparkle that separates a diamond from any other material on the planet.


The Chalfen Promise

We’re here to make this milestone moment memorable with our unmatched custom wedding ring design services.

You can either fill our custom design form or book a virtual consultation with us to begin this journey.

  • Design custom wedding rings according to your specific requirements 
  • Provide complementary engravings on his and her wedding rings to commemorate the special occasion. 
  • Accommodate multiple amendments and modifications to ensure that diamond wedding rings are the perfect fit.
  • We offer free consultations to showcase our diamond wedding ring collection and custom designs.
  • We only use GIA graded diamonds and high-grade metals to mould your diamond wedding bands. Along with giving you direct access to unique cut diamond sources. 
  • Lifetime manufacturer’s warranty to give you a sense of security. 
  • Offer compatible engagement ring bands, if you’re pre-booking the wedding rings
  • Give 30% off cleaning and maintenance services for wedding bands.  
  • Abide by our 30-day return policy if you happen to change your decision.