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[Sales End on Sunday, February 1st] "Bungo and Alchemist" x KARATZ Collaboration Jewelry "Part 3" Writer's Ring [Edogawa Ranpo Model Ring]
As part of a collaborative project to commemorate the 8th anniversary of "Bungo to Alchemist," jewelry was created based on three of the top 12 characters selected from a total of 82 in a character voting to be made into jewelry: Oda Sakunosuke, Edogawa Ranpo, and Kikuchi Kan.
[Collaboration Jewelry Attention to Detail]
◎We use natural stones, including those purchased directly from all over the world by gemologists.
◎Each piece of jewelry is carefully crafted by skilled craftsmen in Japan.
[Sales period]
December 19, 2025 (Friday) 22:00 to February 1, 2026 (Sunday) 23:59
*Sales may end or be suspended once the available number is reached.
* Expected delivery date: Late April 2026
Special page here
~ "Bungo and Alchemist" Bungo Ring Edogawa Ranpo Model ~

This ring is inspired by Edogawa Ranpo's costume. The design of the chest ornament is expressed on the arm. The design is simple and delicate, while retaining the character's glamorous aura. The ring is centered around blue topaz, which is in keeping with his image color, with amethyst used to represent the chest ornament and diamonds to recreate the atmosphere of his costume.
[Product Specifications]
| material | Silver material (SV925 & rhodium/gold plated) Platinum material (Pt950) |
| Price (tax included) | ¥25,800 (silver material) ¥89,800 (Platinum material) K18 & Pt950 |
| Jewelry used |
Swiss blue topaz (approx. 2mm) x 1 Amethyst, diamond (approx. 1.2mm) x 1 |
| size | Sizes 7 to 20 (can be specified in 0.5 increments) 7.1mm (front width), 1.0mm (rear width) |
[Jewelry case]
A special jewelry case is included with each jewelry purchase. 
Size: Approx. 6.5cm x 6.5cm x 5.0cm
[Ring purchase bonus]
For each Bungo Ring purchased, you will receive one free acrylic stand. The character of the bonus will be the same as the character purchased.
Size: Approximately 10cm tall
[Limited-time purchase bonus]
During the campaign period, for every purchase of a ring featuring the Oda Sakunosuke, Edogawa Ranpo, or Kikuchi Kan models, you will receive one free acrylic card. The character of the bonus card will be the same as the character purchased.
Period: December 19, 2025 (Friday) 22:00 to February 1, 2026 (Sunday) 23:59 
Size: Approx. 8 x 6 cm
"Bungo to Alchemist" x KARATZ collaboration
See all items
[Notes]
・All images are for illustrative purposes only.
*All sizes are approximate and may vary slightly.
Due to the characteristics of natural stones, there may be differences in color from the sample. Please rest assured that we inspect each gemstone individually to ensure that the image of the piece is not affected.
■Regarding the estimated shipping date: Delivery times are only estimates.
-Delivery dates may be delayed due to manufacturing reasons.
■About payment methods The following payment methods are available at Caratz STORE.
Credit card payment / Convenience store payment / Bank transfer / Rakuten Pay / Apple Pay / Google Pay / PayPay / d-payment / Merpay / Pay later (Paidy) / Alipay / AlipayHK / WeChat Pay / PayPal
■Regarding resizing of silver material: Silver material cannot be resized.
■About resizing platinum materials
Platinum materials can be resized for a fee.
If you would like to have your item resized after receiving it, please contact us. Please include your name and order number to expedite the process.
karatz_ID: bungo_4000381
©︎2016 EXNOA LLC
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