Assassination Classroom Anime x KARATZ Collaboration Koro-sensei Model Ring

【Shipping Delay Notice】
Due to a higher-than-expected number of orders, product shipments for customers who placed orders on or after April 10, 2026, will be sequentially dispatched from mid-August onwards. We sincerely apologize for any inconvenience this may cause to our waiting customers.

The TV anime "Assassination Classroom" and jewelry specialty store KARATZ have collaborated to create authentic jewelry using gemstones.

Click here for the special page


【Collaboration Jewelry Highlights】
・Uses high-quality gemstones carefully selected by skilled gem buyers.
・SV925 is gold-plated to maintain its beautiful condition for a long time.
・Each item is carefully handcrafted by skilled Japanese artisans.

Sales Period: August 20, 2026 (Thursday)
*Sales may end or be temporarily suspended once the available quantity is reached.

Estimated Delivery Date:
Scheduled to be delivered around late September 2026
*Since these are made-to-order, delivery may be earlier or later depending on production status.


-Koro-sensei Model Ring-
An endearing Koro-sensei model ring featuring a precisely carved lemon quartz gemstone, resembling Koro-sensei's face, at its center.

【Product Specifications】

【Care Instructions】

・Gently wipe away sweat and dirt with a soft cloth, and if necessary, wash lightly with water or lukewarm water and dry.
・When using a microfiber cloth, be careful not to scratch the jewelry if hard debris or sand is attached to the cloth.
・Avoid using abrasive cloths or silver-specific cleaners/solutions, as they may cause the plating to peel off.

【Important Notes】

・All images are for illustrative purposes only.
・All sizes are approximate. Slight variations may occur.
・Due to the characteristics 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 overall image of the piece.

■ About Estimated Shipping Date
・Delivery times are estimates only.
・Delivery times may vary due to manufacturing circumstances.


■ About Payment Methods
The following payment methods are available at KARATZ STORE:
Credit Card / Convenience Store Payment / Bank Transfer / Apple Pay / Google Pay / PayPay / d払い Payment / Merpay / Postpaid Payment (Paidy) / Alipay / AlipayHK / WeChat Pay

■ About Resizing Silver Material
Silver material cannot be resized.

karatz_ID:ansatsu_40000326

©Yusei Matsui/Shueisha・Anime "Assassination Classroom" Production Committee 2025