![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/bungou_pt_bnr_02_1080x1080_865ae236-c65a-4ca6-b64e-09a7550a2d74.jpg?v=1747649136&width=1080)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/8_49d1db1d-abd7-40a0-b340-139f0936804d.jpg?v=1747649136&width=4000)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/PA313965_1.jpg?v=1747649136&width=3790)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/10_1d9b655f-8821-42b1-9fce-aac63cc53173.jpg?v=1747649136&width=3385)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/1_5028e655-4d6d-4a8d-9cb5-125b8dcd8d6e.jpg?v=1747649136&width=4000)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/9_54116403-045b-46d7-aedd-301ccb64561f.jpg?v=1747649136&width=4000)
[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]
【Price Revision Notice】
We regret to inform you that we will be revising the prices for some precious metal models (Pt950/K18YG/K18PG) of the "Bungo to Alchemist" collaboration jewelry, effective from the next restock. In addition to the recent surge in metal prices, processing and manufacturing costs have also risen, making it difficult to continue sales at the conventional prices. We kindly ask for your understanding, as this price revision is necessary to continue delivering jewelry that cherishes the world of the work and maintains its quality.
“Bungo to Alchemist” and jewelry specialist KARATZ have collaborated to create authentic jewelry using gemstones.
【Commitment to Collaboration Jewelry】
◎Uses natural stones, some of which are directly sourced from around the world by certified gemologists.
◎Each piece of jewelry is carefully crafted by skilled artisans in Japan.
【Sales Period】
May 28, 2026 (Thu) 22:00 - July 31, 2026 (Fri) 23:59
*Sales may end or be suspended once the available quantity is reached.
*Estimated delivery date: Late September 2026
Click here for the special page
~ "Bungo to Alchemist" Literary Master Ring: Ryunosuke Akutagawa Model ~ 
“The Cogwheel” is known as one of Akutagawa's representative works. The cogwheel, which appears as an important motif in the story, is used as the main design, and smoky quartz, which matches the color of his outfit, is used. The mystical smoky quartz, also known as "smoke crystal" in Japanese, is perfect for Akutagawa, who was known as a heavy smoker.
The blue ornament on Akutagawa's bolo tie is expressed using London blue topaz gemstones. Its high transparency and vivid blue color captivate viewers.
【Product Specifications】
| Material | Silver material (SV925 & Rhodium plating) Platinum material (Pt950) |
| Price (tax included) | ¥25,800 (Silver material) ¥98,000 (Platinum material) |
| Gemstones Used |
Smoky Quartz 2 stones London Blue Topaz 1 stone |
| Size | No. 7 to No. 20 (can be specified in 0.5 increments) |
【Jewelry Case】
One special jewelry case will be included for each jewelry purchase.
※Image is for illustration purposes only.
【Ring Purchase Bonus】
For each purchase of a Bungo Ring, one acrylic stand will be presented. The character of the bonus item will correspond to the purchased character.

【Limited-Time Purchase Bonus】
The Dazai Osamu, Akutagawa Ryunosuke, and Izumi Kyoka models do not include a limited-time purchase bonus.
"Bungo to Alchemist" x KARATZ Collaboration
View all items
【Notes】
・All images are for illustration purposes only.
・All sizes are approximate. Slight variations may occur.
・Due to the nature of natural stones, there may be differences in color from the samples. Please be assured that each gemstone is inspected to ensure it does not detract from the image of the work.
■Regarding Estimated Shipping Date
・Delivery times are estimates only.
・Delivery times may vary due to manufacturing circumstances.
■Regarding Payment Methods
The following payment methods are available at KARATZ STORE:
Credit Card Payment / Convenience Store Payment / Bank Transfer / Rakuten Pay / Apple Pay / Google Pay / PayPay / d払い / Merpay / Deferred Payment (Paidy) / Alipay / AlipayHK / WeChat Pay / PayPal
■Regarding Resizing of Silver Material
Silver material cannot be resized.
■Regarding Resizing of Platinum Material
Platinum material can be resized for a fee.
If you wish to resize after receiving the product, please contact us. Providing your name and order number will help us assist you more smoothly.
karatz_ID:90001217
©︎2016 EXNOA LLC
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![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/bungou_pt_bnr_02_1080x1080_865ae236-c65a-4ca6-b64e-09a7550a2d74.jpg?v=1747649136&width=1080)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/8_49d1db1d-abd7-40a0-b340-139f0936804d.jpg?v=1747649136&width=4000)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/PA313965_1.jpg?v=1747649136&width=3790)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/10_1d9b655f-8821-42b1-9fce-aac63cc53173.jpg?v=1747649136&width=3385)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/1_5028e655-4d6d-4a8d-9cb5-125b8dcd8d6e.jpg?v=1747649136&width=4000)
![[Sales End on Monday, June 30th] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model]](http://store.karatz.jp/cdn/shop/files/9_54116403-045b-46d7-aedd-301ccb64561f.jpg?v=1747649136&width=4000)




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