Your Own Complimentary Diamond Proposal

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Let us show you how much more you can get with Kensington

Click the buttons below to let us know your ideal diamond shape, carat size and ring setting. A diamond specialist will hand-pick three diamonds of the highest quality matching your criteria, and send you a custom proposal as soon as we can.

Diamond Shape

  • Cushion
  • Emerald
  • Heart
  • Oval
  • Pear
  • Princess
  • Radiant
  • Round

Carat Size

  • 0.50ct ~ 0.74ct
  • 0.75ct ~ 0.99ct
  • 1.00ct ~ 1.49ct
  • 1.50ct+

Ring Setting

  • Classic
  • Tapered
  • Pave
  • Halo
  • Trilogy
  • Twisting
  • Side Baguettes
  • Custom

Enter your name and email address below, and you will receive your custom engagement ring proposal.

DF Color Diamond Price Range with GIA Certificate Triple
Excellent Cut, VS1 Clarity

Diamond Shape
Carat Round Princess Cushion Oval Emerald
0.50ct ¥290,000 ¥270,000 - ¥270,000 ¥270,000
0.70ct ¥425,000 ¥400,000 ¥400,000 ¥430,000 ¥400,000
1.00ct ¥950,000 ¥850,000 ¥850,000 ¥900,000 ¥850,000
1.50ct ¥1,750,000 ¥1,650,000 ¥1,650,000 ¥1,750,000 ¥1,650,000
2.00ct ¥2,950,000 ¥2,800,000 ¥2,800,000 ¥2,950,000 ¥2,950,000

Our Most Popular Recent Engagement Ring Designs

The Mayfair 0.88ct Round Engagement Ring ¥590,000 (tax included)
The Ascot 1.24ct Round Halo Engagement Ring ¥950,000 (tax included)
The Notting Hill 0.90ct Princess Engagement Ring ¥725,000 (tax included)
(Left) Chelsea 2.00CT Full Eternity ¥495,000 (tax included)
The Emily 0.60ct Round Engagement Ring ¥415,000 (tax included)
Center 0.80ct F Color VS2 Clarity, Halo Engagement Ring ¥795,000 (tax included)
Using a 0.60ct central diamond instead, would cost ¥595,000 ~ (tax included)
1.25ct Round Diamond, Kensington Signature Setting, Yellow Gold Total ¥1,250,000 (tax included)
Using a 1.50ct central diamond instead, would cost ¥850,000~ (tax included)
The Art Deco 0.80ct Round Engagement Ring ¥450,000 (tax included)
Kensington 1 Carat Cushion engagement ring ¥895,000 (tax included)
Using a 0.70ct central diamond instead, would cost ¥600,000~ (tax included)
The Grace 2.00ct cushion engagement ring - Total ¥2,800,000 (tax included)
Using a 0.90ct central diamond instead, would cost ¥1,700,000~ (tax included)
0.60ct Oval Diamond in Kensington Halo Setting, ¥520,000
The Lancaster 1.06ct Oval Rose Gold Engagement Ring ¥550,000 (tax included)
Kensington Lady 0.50ct Round Engagement Ring ¥ 385,000 (tax included)
Custom made 1.00ct center cushion diamond, set between 0.60ct side-stones - Total ¥ 1,025,000 (tax included)

Let Us Help You Our job is to make this process as easy and straightforward for you as possible. Fill in the form below if you would like us to schedule a consultation with one of our diamond experts.

Please enter your name, email, desired product and ideal date and time of your appointment.

Past clients have rated us a perfect 5.0/5.0 on Google.



150-0001 Chou Chou Building 2B
4-24-24 Jingumae, Shibuya-ku, Tokyo, Japan


Omotesando Station (Chiyoda Line, Ginza Line, Hanzomon Line) Exit A2 Take the road in-between the Ralph Lauren building and Omotesando Hills, it’s a 2-minute walk. Look for the yellow building on your righthand side.

Open Hours

Mon-Fri 11:00 – 20:00
Sat-Sun 10:00 – 18:00
Appointment Only




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View more than 500 different diamond pieces we have created for our happy clients over the years, on our Instagram profile @kensingtondiamonds