[Sales End on Sunday, August 31st] TV Anime "Blue Lock" x KARATZ Collaboration Chain Ring

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

[Collaboration Jewelry Details]
We use natural stones, including those purchased directly from all over the world by gemologists.

Sales period: Thursday, July 24, 2025, 10:00 PM to Sunday, August 31, 2025, 11:59 PM *Sales may end or be suspended once the available number is reached.
*Expected delivery date: The first production run will be about one week after your order. If the first production run is reached, it will be changed to around late November. (Both dates may be earlier or later.)
*The first production run will only include sizes 9, 11, and 13.

Click here for the special page


-Chain ring-

The chain ring has a unique design with simple ring arms with the name of each character engraved on them and natural stones set in their image colors. The end of the chain is decorated with a plate with the Blue Rock logo and a blue sapphire that is reminiscent of Blue Rock. Enjoy watching the gemstones sway and sparkle in your hand.

[Product Specifications]

Image color gemstone

*Due to the nature of natural stones, there are individual differences in color. Please rest assured that we carefully inspect each piece so as not to damage the image of the piece.


[Jewelry case]
A specially made jewelry case is included with each jewelry purchase.

Size: Approx. 9cm x 9cm

[Guarantee card]
All items come with the original guarantee card.
The guarantee card is not random. It will be based on the character of the item you purchased.

Size: 55mm x 91mm

TV anime "Blue Lock" x KARATZ collaboration
See all items

[Notes]
・All images are for illustrative purposes only.
*All sizes are approximate and may vary slightly.
・Due to the nature of natural stones, there may be differences in color from the sample. Please rest assured that we inspect each gemstone individually to avoid compromising the image of the piece.

■Regarding the estimated shipping date/delivery time is only a guide.
-Delivery dates may be delayed or advanced due to manufacturing reasons.

■ About payment methods
The following payment methods are available at the Caratz Store:
Credit card / Convenience store payment / Bank transfer / Apple PAY / Google Pay / PayPay / d-payment / Merpay / Deferred payment (Paidy) / Alipay / AlipayHK (Alipay) / WeChat Pay

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


karatz_ID:bluelock_40000233_40000242


©Muneyuki Kaneshiro, Yusuke Nomura, Kodansha / "Blue Lock" Production Committee