
A collaboration project commemorating the 8th anniversary of "Bungo and Alchemist."
Jewelry featuring Hakushu Kitahara, Haruo Sato, and Shusei Tokuda, three of the top 12 characters selected from a total of 82 in a character jewelry poll, is now available.
The order of listing and jewelry creation is
not related to the number of votes.

A ring inspired by Hakushu Kitahara's attire. The ornament on the chest is reproduced by making only the metal part of the motif gold.

The tanzanite, chosen to evoke his image color, is a highly pleochroic stone that changes color depending on the viewing angle. Furthermore, black diamonds are added to reproduce the color of his attire, creating a sharp impression.
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PriceSilver (SV925 & Rhodium/Gold Plating): 25,800 yen
Platinum (Pt950 & K18): 158,000 yen -
GemstonesTanzanite (2mm) x1
Black Diamond (1.5mm) x2 - Size8.2mm (front width), 2.0mm (back width), 7-20号 (available in 0.5 size increments)

A ring inspired by Haruo Sato's attire.
The arm of the ring features intricate carvings that represent the delicate pattern of his kimono.

The gradient of the kimono is expressed by combining a padparadscha color sapphire, which has a mix of orange and pink hues, with a deep blue London blue topaz.
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PriceSilver (SV925 & Rhodium Plating): 25,800 yen
Platinum (Pt950): 128,000 yen -
GemstonesPadparadscha Color Sapphire (1.2mm) x1
London Blue Topaz (1.2mm) x2 - Size7.5mm (front width), 1.9mm (back width), 7-20号 (available in 0.5 size increments)

A ring inspired by Shusei Tokuda's attire.
The motifs, shaped like the maple leaves and kumihimo (braided cords) on his kimono, create a gorgeous yet understated impression.

The coloring of his attire is expressed by adorning the ring with three different colored gemstones: indigo tourmaline, green grossular garnet, and almandine garnet.
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PriceSilver (SV925 & Rhodium Plating): 25,800 yen
Platinum (Pt950): 128,000 yen -
GemstonesIndigo Tourmaline (1.5mm) x1
Green Grossular Garnet (1.5mm) x1
Almandine Garnet (1.5mm) x1 - Size7.0mm (front width), 1.5mm (back width), 7-20号 (available in 0.5 size increments)
Jewelry Case

An original jewelry case featuring the work's logo is included.
- (Notes)
- ・All images are for illustrative 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. Rest assured that each gemstone is inspected to ensure it maintains the image of the work.
About Our Collaboration Jewelry

The collaboration jewelry uses a variety of colorful gemstones, some of which are directly sourced by gemologists from around the world, primarily Hong Kong and Sri Lanka. We carefully select beautifully and precisely cut stones to maximize the inherent beauty of each gemstone. Tanzanite's strong pleochroism is one of its charms, in addition to its beautiful shape. Also, please note the differences in color and brilliance between London blue topaz and indigo tourmaline, even though they are both blue gemstones. To ensure long-lasting wear, the silver material is SILVER925 with rhodium plating to prevent oxidation and discoloration. The platinum material used is Pt950 with a purity of 95% or more. Please enjoy our authentic jewelry, which only KARATZ, a specialty gemstone store, can offer.
Collaboration Ring Purchase Bonus

For each purchase of one ring from the Hakushu Kitahara model, Haruo Sato model, or Shusei Tokuda model, you will receive one acrylic stand. The character of the bonus will correspond to the purchased character.
Limited-Time Purchase Bonus

For each purchase of one ring from the Hakushu Kitahara model, Haruo Sato model, or Shusei Tokuda model during the period, you will receive one acrylic card. The character of the bonus will correspond to the purchased character.Period: June 12 (Thu) - June 30 (Mon)
All images are for illustrative purposes.
There may be some differences from the actual product.
Online Store
We will be taking orders for collaboration jewelry at our online store "KARATZ STORE."
- KARATZ STORE
- Period: June 12 (Thu) 22:00 - June 30 (Mon) 23:59
Delivery: Scheduled for late September
Shipping: Free for purchases of 8,000 yen (tax included) or more
Pop-up Store

At the pop-up store, we will be accepting orders for jewelry.
Please feel free to visit us to try on the jewelry.
- KARATZ Pop-up Store in Hakata Marui
- Period: June 12 (Thu) - 15 (Sun)
- Location: Hakata Marui 3F
- Business Hours: 10:00 AM - 9:00 PM
- KARATZ Pop-up Store in Shinjuku Marui Annex
- Period: June 24 (Tue) - 30 (Mon)
- Location: Shinjuku Marui Annex 2F
- Business Hours: 11:00 AM - 8:00 PM
- *Weekends open at 10:30 AM *Only on June 30 (Mon), closing at 5:30 PM
To commemorate the 7th anniversary of "Bungo and Alchemist," the first collaboration jewelry featured writer rings for Osamu Dazai, Ryunosuke Akutagawa, and Kyoka Izumi. In addition, a limited edition 7th-anniversary gear brooch was also sold.
About KARATZ

KARATZ Co., Ltd. was established with the desire of gemologists to provide accurate knowledge about gemstones and a place where anyone can easily seek advice. Since then, we have continued to disseminate a wealth of information related to gemstones, primarily through our specialized gemstone information media, "KARATZ Gem Magazine" (https://karatz.jp/), and also utilizing social media platforms such as Twitter, Instagram, and Facebook.
"KARATZ Gem Magazine" (https://karatz.jp/) continues to provide a wide range of information, not only basic knowledge about gemstones but also how to distinguish between genuine and fake items, and interviews with prominent figures in the gem industry.
It is characterized by a large readership not only among the general public but also within the industry, with monthly visitors exceeding approximately 150,000, making it one of the largest specialized gemstone media in Japan.
In addition, gemstones sourced by our representative, Koyama, from both domestic and international markets are sold at our online store, "KARATZ STORE."
Representative Koyama visits Thailand, Sri Lanka, Hong Kong, and the United States several times a year, sometimes even going directly to mines to purchase gemstones.
Leveraging over 10,000 transactions of buying and selling, he carefully selects and procures high-quality and beautiful gemstones.
We are also highly praised for creating semi-custom and custom-made jewelry using a wide range of gemstones, collaborating with skilled Japanese craftsmen to continuously produce high-quality jewelry that can be cherished for a long time.
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