#Japan #Tokyo #Isetan Shinjuku #Sustainable Jewelry #KOHKOH

KOHKOH Introduces Sustainable Luxury at Isetan Shinjuku

From August 6 to August 12, 2025, the innovative sustainable jewelry brand KOHKOH will showcase its latest collection at the Isetan Shinjuku Main Store. This event marks a significant milestone for KOHKOH, as it is the first time their new pieces will be unveiled in the Kanto region.

KOHKOH, founded by the precision metal parts manufacturer Castem in 2023, focuses on creating eco-conscious jewelry that combines art and sustainability. Under the artistic direction of Takamitsu Kojima, a renowned jewelry designer and board member of the Japan Jewelry Designer Association, KOHKOH aims to pioneer a new wave of ethical jewelry in line with global sustainability movements.

New Collection Highlights

Among the highlighted pieces is the brand's signature “Light” ring, adorned with stunning blue topaz and white topaz. This piece symbolizes KOHKOH's dedication to merging meticulous craftsmanship with striking aesthetics. The ring exemplifies a unique charm, featuring a delicate pearl overlay that provides a distinct allure.

Another exceptional offering is the new series “Unite” earrings. This innovative design combines mother-of-pearl and perfectly round pearls, representing the harmonious union between natural beauty and skilled craftsmanship. These earrings will be available for exclusive pre-sale at Isetan Shinjuku, making it an unmissable opportunity for jewelry enthusiasts.

Additionally, KOHKOH will showcase modern cameos crafted from mother-of-pearl, achieving intricate shapes that can only be rendered through advanced machinery. This integration of technology and artistry sets KOHKOH apart in the jewelry landscape.

Showcasing Sustainable Practices

KOHKOH prides itself on sustainability, using discarded mother-of-pearl from pearl production processes to create their unique jewelry pieces. The brand utilizes 3D modeling technology developed by Castem to challenge conventional beliefs about pearl farming, leading to the successful cultivation of irregular-shaped pearls — a revolutionary step in the industry that was patented in 2021.

KOHKOH's artistry has not gone unnoticed. At the prestigious New Jewelry TOKYO 2024 event held in Aoyama, the brand received both the Best Jewelry Award and the Audience Award, emphasizing its emerging status in the jewelry sector. This recognition showcases the brand's commitment to not only aesthetic value but also craftsmanship, innovation, and sustainability.

Event Details

The unveiling will take place at the Isetan Shinjuku Store:

• - Date: August 6 (Wed) – August 12 (Tue) 2025
• - Time: 10:00 AM – 8:00 PM (subject to store hours)
• - Location: Promotion Space, 1st Floor, Main Building

3-14-1 Shinjuku, Shinjuku City, Tokyo 160-0022, Japan

• - Event URL: Isetan Shinjuku

KOHKOH welcomes everyone to explore their latest collections, which promise to further enrich the realm of sustainable luxury. With an emphasis on creativity and a respect for nature, this collection invites jewelry lovers to embrace the new possibilities in the world of fashion accessories.

For those unable to attend, KOHKOH's pieces are available online at their official shop and via their social media channels.

For inquiries, feel free to reach out to Kamimura at [email protected] or visit their Instagram for more updates.