'Fancy' diamonds (anything non-round) are not given a cut grading by the GIA, because there are too many variables to calculate within these different shapes. Therefore Kensington hand-select only pear, oval, cushion, emerald, princess, radiant, asscher and marquise diamonds which have internal cut proportions we would classify as 'Excellent'. Any diamond not living up to our expectations of maximum brilliance and sparkle will be discarded.
The highest grading. Rare, exceptionally colorless diamonds that look icy white in appearance.
A very high quality diamond, with tiny inclusions that will take a trained professional a while to see under 30x magnification. Impossible to see with the naked eye.
We only stock diamonds that have been certified by the GIA; the world’s largest and most reputable independent grading laboratory. They are recognised as the strictest graders of diamonds in the industry, giving you the peace of mind that you are always getting exactly what you paid for. To see this diamond’s unique GIA certificate, please click below.
GIA certified, ethically sourced diamonds - without exception.
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.
We deal exclusively from the world's largest and most-established De Beers Sightholder producers, who are 100% compliant with the regulations laid out in the Kimberley Process. All our diamonds have also been certified by the GIA (Gemological Institute of America) - known as the world's leading and strictest grading authority.
Handcrafted in Tokyo. Lifetime warranty guaranteed.
Each and every product we produce is designed in London, then handmade here in Tokyo by master craftsmen with decades of experience.
Our business is based on delivering beautiful, yet secure and sturdy pieces to our clients that will last a lifetime. We are exceptionally proud of the hours of world class Japanese craftsmanship that goes into each one.
Therefore we are happy to offer a lifetime warranty to guard against any damage as a result of manufacturer defects.
The highest quality service, for your special experience.
We value our client's privacy, and pride ourselves on providing the absolute highest level of service in a comfortable, friendly environment at our showroom in Omotesando, Tokyo.
At Kensington Diamonds we believe that every customer deserves our full undivided attention, therefore we operate on an appointment only basis.
There is no absolutely pressure to purchase, and we are more than happy to answer any questions you have.
POPULAR oval DIAMOND RINGS
0.70 CARAT SIDE BAGUETTES
1.00 CARAT THIN PAVÉ
1.00 CARAT HALO
0.80 CARAT FANCY INTENSE YELLOW
1.00 CARAT CLASSIC
FULL CUSTOM DESIGN
Create your own dream bespoke piece.
10,000+ GIA DIAMONDS
Take advantage of Japan's broadest online diamond inventory.
ETHICALLY SOURCED - WITHOUT EXCEPTION
For your peace of mind - we only use GIA certified, Kimberley process compliant diamonds.
On all Kensington pieces. If you ever need help, we will be here always.
WHAT HAPPENS AT AN APPOINTMENT?
If you are ready to find your perfect piece, simply message here and let us get to work for you:
Friendly one-on-one consultation at our Omotesando showroom; no obligation to continue if you don’t like what you see.
Let us answer all your questions, and help you get the biggest, and best diamond for your budget.
See our stunning collections for yourself - compare and try on various diamond shapes and sizes to see which you like best.
All Kensington products come with a lifetime warranty as standard - Kensington’s after care will keep your piece perfect forever.