【Sales end on Thursday, August 20】Assassination Classroom x KARATZ Collaboration Koro-sensei Model Necklace

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

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

Click here for the special page


【Collaboration Jewelry Highlights】
・Uses high-quality gemstones carefully selected by experienced gem buyers.
・SV925 is gold-plated to maintain its beautiful condition for a long time.
・Each piece is meticulously crafted by skilled artisans in Japan.

Sales Period: August 20, 2026 (Thursday)
*Sales may end or be temporarily suspended once the maximum number of items available for sale has been reached.

Estimated Delivery Date:
Scheduled for delivery around late September 2026
*As this is made-to-order, delivery dates may vary depending on production status.


-Koro-sensei Model Necklace-
An endearing Koro-sensei model necklace featuring a clear lemon quartz carved elaborately to resemble Koro-sensei's face at its center.

【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, be careful as hard debris or sand adhering to it may scratch the item.
・Avoid using abrasive cloths or silver-specific cleaners/solutions, as they may cause the plating to peel off.

【Important 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 one by one to ensure the integrity of the design.

■ About Estimated Shipping Date
・The delivery period is an estimate only.
・Delivery dates 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 / Post-paid Payment (Paidy) / Alipay / AlipayHK / WeChat Pay

karatz_ID:ansatsu_40000328

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