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7th Anniversary Collaboration Jewelry 7th Anniversary Collaboration Jewelry

Countless books have been penned by literary masters. Their unique worldviews and emotionally stirring stories, recorded as literature, have enriched people's hearts and the world. However, strange beings appeared, staining these books black. These were "Invaders," born from negative emotions towards literature. The only ones who can oppose these Invaders, who aim to corrupt books and erase them from this world, are the literary masters who have been reincarnated by the power of "Alchemists." The literary masters delve into the invaded books and defeat the Invaders, thus saving the books. All for the sake of protecting the literature of this world. This is a new tale of literary masters, penned by those who poured their souls into their works——

Dazai Osamu ModelI'm Dazai Osamu! A genius novelist who appeared in this world like a comet!

The pattern motif from Dazai's outfit is used, and the center stone is almandine garnet, which is close to his image color. The ring's arm features a braid design reminiscent of the character's hairstyle, giving it a charming atmosphere.

We chose yellow diamonds for the diamonds set in the arm. The color yellow is also the color of his eyes, a bright color symbolizing his lively character.

  • PriceSilver (SV925) 25,800 yen,
    Platinum (Pt950) 128,000 yen
  • GemstonesAlmandine Garnet,
    Yellow Diamond (all natural)
  • SizeJP size 7-20 (in 0.5 increments)
Purchase Here

Akutagawa Ryunosuke ModelHello, my name is Akutagawa Ryunosuke. Nice to meet you.

The gear, a significant motif in Akutagawa's masterpiece "The Cogwheel," is the main design, and smoky quartz, which matches the color of his outfit, is used. The mysterious color of smoky quartz, known as "smoke crystal" in Japanese, perfectly suits Akutagawa, who was a known smoker.

The blue ornament on Akutagawa's bolo tie is represented by a London blue topaz gemstone. Its high transparency and vivid blue color captivate all who see it.

  • PriceSilver (SV925) 25,800 yen,
    Platinum (Pt950) 158,000 yen
  • GemstonesSmoky Quartz
    London Blue Topaz (all natural)
  • SizeJP size 7-20 (in 0.5 increments)
Purchase Here

Izumi Kyoka ModelI am Izumi Kyoka, a disciple of Ozaki. My motto is cleanliness first, filth elimination.

The main motif is the maple leaf pattern from Kyoka's haori. Inspired by the color of Kyoka's kimono, which embodies his feelings for his master Ozaki Koyo, we adorned it with sky blue topaz and yellow sapphire.

Despite its subdued color, the sky blue topaz radiates a clear brilliance, reminiscent of his meticulous cleanliness.

  • PriceSilver (SV925) 25,800 yen,
    Platinum (Pt950) 128,000 yen
  • GemstonesSky Blue Topaz
    Yellow Sapphire (all natural)
  • SizeJP size 7-20 (in 0.5 increments)
Purchase Here

The "cogwheel" motif appears throughout the work. As a special item to commemorate the 7th anniversary, we are creating a three-part cogwheel brooch using the highest quality gemstones and precious metals.

  • Gold x Platinum / Limited to 1 item
  • Size: Approx. 4.5 x 5.5 cm
  • Material: K18 x Pt900
  • Weight: Approx. 21g
  • Main Gemstone: Diamond (INTERNALLY FLAWLESS)
  • Accessories: Original jewelry case, guarantee card

Elaborate mechanism
where cogs turn

Among the three parts, the two overlapping cogs are designed to move like real cogs. The production involves skilled Japanese craftsmen who are masters of precious metal processing, creating each part and assembling it by hand.

The diamond set in the center
is of the highest quality

Diamonds have a value standard called 4Cs. Among these, the clarity (representing transparency), which affects the beauty of a diamond, is of INTERNALLY FLAWLESS grade, a high-quality diamond rarely used even in engagement rings.
The large and small cogs are set with sapphires and rubies, respectively. The large cog has a diamond in the center and six multi-colored sapphires around it, while the small cog uses seven vividly colored rubies.

Another cogwheel connected by a chain is set with almandine garnet, London blue topaz, and rhodochrosite. These gemstones were chosen from the image colors of Dazai, Akutagawa, and Izumi. The combination of colorful gemstones symbolizes the vivid literary world created by the three literary masters' different writing styles. Even within the same type of gemstone, subtle differences in color and sparkle mean that no two are exactly alike, possessing a charm akin to that of living humans.
This is an authentic piece of jewelry that only KARATZ, which deals in gemstones from all over the world, can offer.

Moving cogs are made of platinum

The small moving cogs are all made of Pt900.
Please touch and feel the substantial weight and texture unique to platinum. The other cogs are made of SV925 with K18 plating, allowing you to enjoy the beautiful contrast of platinum and yellow gold.

  • Silver Material / Limited to 50 items
  • Material: SV950
  • Size: Approx. 4.5 x 5.5 cm
  • Main Gemstone: White Sapphire
  • Accessories:Original exclusive Box,
    Guarantee Card
Purchase Here

Bungo to Alchemist
7th Anniversary Cogwheel Brooch
Exclusive Jewelry Case

Those who purchase the 7th anniversary brooch will receive a book-shaped jewelry case modeled after Osamu Dazai's book.

(*Image is for illustration purposes only. The actual product may differ slightly.)

The color of the foil-stamped title for the gold & platinum product and the silver product will differ.

Collaboration Ring Purchaser Benefit

For each ring purchased, one acrylic stand will be presented, corresponding to the purchased character.

7th Anniversary Cogwheel Brooch
Purchaser Benefit

A set of three acrylic stands featuring Osamu Dazai, Ryunosuke Akutagawa, and Kyoka Izumi in their casual clothes will be presented. (Only applicable to those who win the lottery sale)

7th Anniversary Item
【Gold x Platinum Material】
Purchase Benefit

Those who purchase the 7th Anniversary Item [Gold x Platinum Material] will receive an acrylic art board of the key visual.
(Only applicable to those who win the lottery sale)

Limited-time offer from November 1st to November 26th

Customers who order a Bungo ring between November 1st (Wed) and November 26th (Sun) will receive one B6 clear file (design is random). Those who purchase 3 or more Bungo rings will receive a complete set of 3 files.

※This offer also applies to purchases made at conceptshops on the 3rd floor of Shinjuku Marui Main Building from November 24th (Fri) to 26th (Sun), 2023. The 7th anniversary brooch will be displayed from November 24th (Fri) to 26th (Sun), and the Bungo rings from November 24th (Fri) to 30th (Thu) at conceptshops on the 3rd floor of Shinjuku Marui Main Building.

All images are for illustration purposes.
Actual products may differ slightly.

Purchase Collaboration Jewelry Here

About KARATZ

KARATZ Inc. was established with the desire to have certified gemologists disseminate accurate knowledge about gemstones and provide a place where anyone can easily seek advice. Since its establishment, we have continuously provided a wealth of information related to gemstones, primarily through our specialized gemstone information media, "KARATZ Gem Magazine" (https://karatz.jp/), as well as through social media platforms like Twitter, Instagram, and Facebook.
"KARATZ Gem Magazine" (https://karatz.jp/) continues to disseminate information on a wide range of topics, including not only basic gemstone knowledge but also how to distinguish between genuine and fake gemstones, and interviews with prominent figures in the gemstone industry.
It is characterized by having many readers not only from the general public but also from within the industry, with monthly visitors exceeding 150,000, making it one of the largest specialized gemstone media in Japan.

Furthermore, gemstones sourced by our representative, Koyama, both domestically and internationally, are sold on our official online store, "KARATZ STORE."
Representative Koyama visits countries such as 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 gemstone transactions, he carefully selects and procures high-quality and beautiful gemstones.
Our semi-custom and custom-made jewelry using a wide range of gemstones are also highly popular, and we continue to create high-quality jewelry that can be cherished for a long time, in collaboration with skilled Japanese craftsmen.

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