B.L.S.
While highlighting the distinct character of each pendant and tennis bracelet, we have meticulously refined their form and comfort, designing them so that every moment of wearing radiates an elevated sense of elegance.
The designs, infused with the mastery of Japanese craftsmanship, incorporate the Yamato Ratio (Silver Ratio), a principle rooted in Japanese aesthetic sensibilities, achieving a harmonious, refined, and graceful presence.
By precisely aligning the facets of each stone, the jewelry emits a consistent, clear, and dignified brilliance from every angle.
This series features lab-grown diamonds—possessing the same essence as natural diamonds, yet chosen with minimal environmental impact, representing a “future-conscious” choice.
These pieces showcase pure and noble beauty, embodying sophisticated Japanese jewelry meant to be cherished for generations.
With the vision of creating “Three Generations, A Hundred-Year Legacy,” we were founded in August 2011 in Kofu City, Yamanashi Prefecture—recognized as one of the world’s three major jewelry processing centers. Our mission is for jewelry and gemstones to be passed down from parent to child, and from child to grandchild, transcending generations.
Our founder, Ken Watanabe, was inspired by the Great East Japan Earthquake in March 2011 to reflect deeply on life. With the conviction that no one knows when their final moment may come, he gathered a select team of seven highly skilled and trusted artisans to embark on this journey.
The company name B.L.S. derives from Bonds Linking for Success, symbolizing Watanabe’s personal belief and forming the cornerstone of our management philosophy.
Our corporate mission is to preserve and carry forward the traditional craftsmanship that has been handed down for centuries, ensuring that Kofu’s jewelry industry will continue to thrive 100, even 200 years into the future. To this end, we are committed both to supporting active artisans and to nurturing the next generation of craftspeople.
The jewelry industry in Yamanashi was born thanks to the quartz crystals mined from the Kinpu Mountain area. Kofu City has a long-standing connection with quartz, dating back to the Paleolithic period, approximately 16,000 years ago. In the history of jewelry, from the late Edo period to the Meiji era, quartz polishing and metal craftsmanship came together, enabling the creation of highly marketable and more refined works. This development established Kofu as a major hub for the jewelry industry.
Moreover, Kofu City possesses all the essential elements for jewelry production—from raw material sourcing and design to gemstone polishing and metalwork. This comprehensive capability has earned it international recognition as one of the world’s three major jewelry processing centers, alongside Idar-Oberstein in Germany and Vicenza in Italy.
Awarded in the Silver Accessories category at the 2024 Japan Traditional Culture Grand Prix, organized by the Japan Traditional Culture Promotion Project.