It's been 10 years since we opened our shop in Hanzomon.
To express our gratitude, we will hold a 10th-anniversary exhibition in Tokyo,
and our first renovation consultation in Osaka.
Please take this opportunity to see 440's journey and current state, from our early brand creations to our latest works.
Tokyo | 10th Anniversary Exhibition
We will be holding an exhibition to commemorate our 10th anniversary at 440showroom in Hanzomon.
This exhibition showcases our journey over the past decade, from early brand works to our latest creations.
You can view past works that led to the current 440, as well as new pieces that hint at the future, all presented as a continuous flow.
Exhibited items will be available for purchase.
2026.5.14 Thu – 5.18 Mon
10:00 – 19:00
440showroom
4-40 Ichibancho, Chiyoda-ku, Tokyo Google map
(1 minute walk from Hanzomon Station, Exit 5)
How to visit
May 14, 15, 16: Reservation required
May 17, 18: Walk-ins welcome (reservations preferred)
*During busy times, customers with reservations will be given priority.
Osaka | Renovation Consultation Event
We will be holding our first reform consultation event in Osaka.
With the cooperation of InterContinental Osaka, we have prepared a special opportunity for you to consult with us in a private setting, allowing you to relax and take your time.
Let us transform your inherited jewelry or cherished pieces you no longer wear into something that will complement your everyday life.
We will examine your jewelry and offer advice on reforms and custom orders.
Reservations are also accepted for those who wish to view the works.
Exhibits are available for purchase.
May 22, 2026 Fri – May 23 Sat
10:00 – 20:00
May 24, 2026 Sun
10:00 – 14:00
InterContinental Osaka
*Venue details will be provided individually after booking confirmation.
How to Visit
Reservations are required for all visits.
10 years old 440
This exhibition will feature not only new works, but also many pieces created over the past 10 years.
You can view the jewelry, born from the sensibilities and encounters with materials of each period, as a continuous flow.
In addition, many other works can be viewed at the venue.
Please note: Only a curated selection of works will be exhibited at the Osaka venue, so please inquire before making a reservation if there are specific works you wish to see.
New Works 2026
Our latest work will also be showcased at the venue.
Loupe pendant top
A realistic loupe-motif pendant top made of gold and two rose-cut diamonds. For you who love jewelry.
K18YG Rose Cut Diamond Pendant Top
0.789ct / I / SI1
0.787ct / H / SI1
¥1,870,000
Bangles
From top to bottom in the image:
440 Basic - Diamond Bangle K18PG/WG 0.43ct ¥682,000
440 Basic - Diamond Magnet Bangle Line K18 White Gold 0.29ct ¥297,000
440 Basic - Diamond Magnet Bangle Cluster K18PG/WG 0.14ct ¥286,000
440 Basic - Diamond Magnet Bangle Three Pave K18PG/WG 0.17ct ¥275,000
Zero Pavé - 8 Row Diamond Ring
A new full pavé collection adorned only with light. Can also be worn as a pendant top.
Available in K18YG / K18PG / K18WG
Size 12 approx. 2ct ¥880,000
*Price varies depending on ring size
Click here for details
Diamond Floating Tennis Necklace
Seven diamonds set in a tennis necklace gently sway.
Also available in a star design.
440 Basic - Round / Diamond Floating Tennis Necklace (1.32ct) K18 Yellow Gold 40cm ¥891,000
Water Lip - Onyx
The popular Water Lip onyx jewelry is now available in a small size.
K18YG Onyx Ring ¥242,000
K18YG Onyx Necklace 40cm ¥198,000
K18YG Onyx Earrings ¥264,000
Also available in pink gold and as earrings
Swallow Necklace
A swallow motif necklace that brings good fortune.
South Sea Pearl, Diamond, Onyx, Ruby Necklace 45cm
K18WG/K18YG Each ¥649,000
Exhibition pieces displayed at Vicenzaoro
Jewelry exhibited at "Vicenzaoro," one of the world's leading jewelry shows, held in Vicenza, Italy, in January 2026.
In addition, you can see many other works at the venue.
Please note: Only a curated selection of works will be displayed at the Osaka venue, so please inquire before booking if there is a specific piece you wish to see.
Yellow Diamond Award
10th Anniversary Special Project
As a special project commemorating our 10th anniversary, we are pleased to offer custom orders crafted from rare yellow diamonds, including fancy intense yellow and fancy vivid yellow loose diamonds.
This is an opportunity to create your very own jewelry, enjoying the process of discovering the perfect color and shape.
Frequently Asked Questions (FAQ)
We sincerely look forward to your visit.
If you have any questions or concerns, please feel free to contact us.
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440showroom