[Sales start at 10 PM on Saturday, March 14th] Assassination Classroom x KARATZ collaboration Nagisa Shiota model ring

To commemorate the 10th anniversary of the TV anime "Assassination Classroom," jewelry specialty store KARATZ is releasing its second collaboration jewelry. Authentic rings that express the worldview of the series through gemstones are now available.

Click here for a list of products


[Collaboration Jewelry Attention to Detail]
- We use high-quality gemstones carefully selected by experienced gem buyers.
・As a jewelry specialty store, we select gemstones based on the color and meaning of each character, and then finish them using the delicate sculpting techniques of our domestic craftsmen.

Sales period: March 14th (Sat) 2026, 10pm - May 10th (Sun)
*Sales may end or be temporarily suspended once the available number is reached.

Estimated delivery date:
Orders placed by the end of March 2026: Expected delivery date: around the end of May 2026
Orders placed by May 10, 2026: Expected delivery date is the end of July 2026. *As this is made-to-order, delivery may vary depending on production status.


-Nagisa Shiota model ring-
This ring is designed with Nagisa Shiota in mind.
The soft lines of the design are inspired by Nagisa's hairstyle, and the arm is engraved with a knife-like motif. The inside is engraved with the name of Class 3-E, expressing a connection to the story.
The center stone is a Swiss blue topaz reminiscent of hair color, and the side stones are blue sapphires that evoke clear eyes.
It is a design that is typical of Nagisa, exuding quiet gentleness and hidden strength.

[Product Specifications]

[Care instructions]
- Gently wipe off sweat and dirt with a soft cloth, and if necessary, lightly wash with water or lukewarm water and dry.
・When using a microfiber cloth, please be careful not to use it with hard dirt or sand attached, as it may cause scratches.
- Avoid using cloths containing abrasives or silver-specific cleaners/cleaning solutions as they may cause the plating to peel off.

[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 / Convenience store payment / Bank transfer / Apple Pay / Google Pay / PayPay / d-payment / Merpay / Deferred payment (Paidy) / Alipay / AlipayHK / WeChat Pay

■Regarding resizing of silver material: Silver material cannot be resized.

karatz_ID:ansatsu_ 40000385

©Yusei Matsui/Shueisha, Assassination Classroom Anime Production Committee 2025