[Sale from 10 PM on Friday, December 5th] Assassination Classroom x KARATZ Collaboration Korosensei Model Ring

The TV anime "Assassination Classroom" has collaborated with the jewelry specialty store KARATZ to create authentic jewelry using precious stones.

Special page here


[Collaboration Jewelry Attention to Detail]
- We use high quality gemstones carefully selected by experienced gem buyers.
- SV925 is gold plated to keep it in beautiful condition for a long time.
- Each item is carefully crafted by skilled craftsmen in Japan.

Sales period: From 10:00 PM on Friday, December 5, 2025
*Sales may end or be temporarily suspended once the available number is reached.
・Purchases made between December 5th, 2025 and December 31st, 2025: Expected delivery date is mid-March 2026. ・Purchases made after January 2026: Expected delivery date is approximately 3 months after purchase.



-Korosensei Modeling-
This charming Korosensei model ring features a transparent lemon quartz gemstone with intricate carvings resembling Korosensei's face.

[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_40000326

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