Together, we will create the diamond jewelry piece that you will love forever.


You should come to Kensington if you are looking for the perfect larger sized diamond, of 0.50ct and above.


Kensington is Tokyo's larger diamond expert.


Let our specialists provide you careful counseling, and propose the best quality options at a reasonable price.


Our creative team in London create sophisticated designs, and our skilled craftsmen in Japan handcraft them to the highest quality standard.


If you are looking for a bigger diamond, or a shape that is rare to find in Japan - Kensington will be able to deliver it to you.

Let us find you the highest quality diamond that you will love for the rest of your life.

It is our mission to find our clients the biggest, best option available within your desired budget.

From round, to fancy shapes, to yellow diamonds; we have a wide variety of popular designs, or could also create a custom-made engagement ring just for you.



Are you looking for something out of the ordinary?

A bigger or more bespoke piece, that no one else has?

Kensington Diamonds specialises in eternity rings of one carat and above.

We source not only rounds - but also emerald, princess and oval diamond designs within our stunning collection.

Only the best and brightest diamonds are hand selected, to make sure your special eternity sparkles as brightly as your special day.



Are you looking for a unique piece to celebrate a special milestone, or achievement in your life?


Or purchase that special unique gift for the person you love?


For whatever the occasion;

Our collections showcase the highest quality diamonds, handcrafted into stunning jewellery made to last for a lifetime.



You need to work with a diamond dealer you can trust.


At Kensington Diamonds we abide by a strict code of conduct to ensure that every single diamond we find our customers has been legally procured from an ethically responsible source. (Kimberley Process compliant).


All our diamonds have also been certified by the GIA (Gemological Institute of America) - known as the world's leading and strictest grading authority.


You are guaranteed the absolute highest quality.



Are you struggling to find a larger carat size diamond in Japan?


Our extensive online diamond inventory is the broadest nationwide; giving you access to over 10,000 GIA certified diamonds - including round, oval, pear, cushion, emerald and princess shapes.


Get in touch and together we will find the ideal diamond within your budget.



At Kensington Diamonds we strive to elevate the experience of purchasing jewellery, by offering a one-on-one diamond consultation.


Spend upto an hour with one of our diamond specialists who will be keen and willing to answer any questions you have, and let them use their expertise to make the process as simple and easy as possible.


Our Omotesando boutique is the perfect comfortable space for you (and your partner, or friends) to browse our latest collection of stunning diamond jewelry over a glass of complimentary champagne.



We are looking forward to hearing from you
TEL 03-6755-0024 Weekdays: 11:00-20:00 Weekends: 10:00-18:00

Kensington Diamonds


Chou Chou 2B

Jingumae 4-24-24




Opening Hours

  • Weekday: 11.00-20.00
  • Weekend: 10:00-18:00


From Omotesando Station - Please Use Exit A2
(Chiyoda Line, Ginza Line, Hanzomon Line)
Copyright © 2013-present Kensington Diamonds