About Us
A Japanese Legacy Jewelry House in San Francisco
“Beyond Beauty, a Timeless Connection”
Founded in 1967, Miseki Jewelry is a Japanese-owned jewelry store in San Francisco Japantown, specializing in Japanese Akoya pearls, fine jewelry, and trusted Japanese watches.
Recognized as a San Francisco Legacy Business, we are known as a trusted San Francisco jewelry store with decades of craftsmanship, cultural heritage, and community presence.
With GIA-qualified expertise and over 30 years as an authorized dealer of Seiko, Citizen, and Casio G-SHOCK, we offer carefully selected pieces defined by authenticity, precision, and lasting value.
Read Full Story
At Miseki Jewelry, we create more than jewelry—we craft timeless connections and luminous stories that transcend generations. Rooted in the harmony of Japanese tradition and modern elegance, each piece becomes a radiant highlight in the narrative of your life.
Founded in March 28, 1967, Miseki Jewelry established its physical storefront on March 28, 1968, in the heart of San Francisco Japantown, one of the most culturally significant Japanese districts in the United States. For nearly six decades, we have continued to deliver the essence of Japanese craftsmanship through fine jewelry, authentic Japanese Akoya pearls, and trusted Japanese watches and a legacy built on trust, quality, and cultural continuity.
Our expertise is also supported by GIA-qualified knowledge, reflecting our commitment to professional standards, gemological understanding, and thoughtful guidance for our customers.
For over 30 years, Miseki Jewelry has also been an authorized retailer of Seiko, Citizen, and Casio G-SHOCK, offering trusted access to some of Japan’s most respected watchmakers. This long-standing relationship reflects our commitment to authenticity, reliability, and enduring customer care.
Today, Miseki Jewelry is officially recognized as a San Francisco Legacy Business, a prestigious designation awarded to businesses that have made a lasting cultural, historical, and economic contribution to the city and its communities. This recognition reflects not only longevity, but also meaningful service, neighborhood identity, and cultural heritage in San Francisco.
At Miseki, we believe that every piece you wear illuminates a meaningful chapter of your life—an expression of beauty, memory, and continuity. Our jewelry is not simply worn; it is lived, cherished, and passed down, becoming part of a story that endures across generations.
Through the beauty and heritage of Miseki Jewelry, may your story shine—ever bright, ever meaningful.
Miseki Jewelry — Since 1968
Serving San Francisco Japantown from our storefront since 1968.
Official recognition as a San Francisco Legacy Business.
DISCOVER OUR HISTORY
March 28, 1967
A Legacy Begins
Miseki Jewelry is founded in San Francisco by Kenji Kaneda, President of Mikuni Industries.
March 28, 1968
Our First Flagship
Alongside SF Japantown Center’s grand opening, Miseki Jewelry opens its doors, marking our first step into the heart of cultural heritage.
1970
Masaharu Nagasuga will become the General Manager of the San Francisco store, eventually succeeding as the second-generation president.
1972
In 1972, the 2nd Miseki Jewelry store was founded at the Hilton Hawaiian Village. It is now closed.
1974
In 1974, Miseki Jewelry opened a branch store, "Jewels of Sadao," in Mexico City, CDMX, Mexico, in collaboration with Sadao Mochizuki. It is now closed.
Relocation Within Japan Center Mall
1975
In 1975, Miseki Jewelry moved to Suite 303 within the Japan Center Mall in San Francisco’s Japantown, strengthening its presence as a Japanese-owned jewelry store in the Bay Area.
1976
In 1976, the 3rd Miseki Jewelry store was founded in Harajuku, Tokyo, Japan. It is now closed.
1977
In 1977, the 4th Miseki Jewelry store was founded at The Westin Bonaventure Hotel & Suites in Los Angeles. It is now closed.
October 1, 1982
The Era of the 2nd Owner
Masaharu "Mike" Nagasuga assumes the role of the 2nd Owner of Miseki Jewelry, continuing its legacy of excellence.
1993
In 1993, the 5th Miseki Jewelry store was founded at Yaohan Plaza in Little Tokyo, and operated until 1999.
2002
Recognized for over a decade of contributions to the Northern California Cherry Blossom Festival, we received a Certificate of Appreciation from the City and County of San Francisco on April 13, 2002.
September 30, 2023
Transition to the Third Generation
On September 30, 2023, Masaharu “Mike” Nagasuga formally entrusted Miseki Jewelry to the next generation. This marked the end of over 50 years of dedicated leadership, paving the way for a new era to begin.
October 1, 2023
The Era of the 3rd Owner
Asuka Saito & Tom Yamashita assume the role of the 3rd Owner of Miseki Jewelry, continuing its legacy of excellence.
March 23, 2026
Miseki Jewelry was officially recognized as a Legacy Business by the City of San Francisco, a designation given to businesses that hold cultural and historical significance within the community.
Trusted Since 1967
Our owners, Asuka Saito and Tom Yamashita, are the third-generation Japanese owners of Miseki Jewelry. Asuka is certified by the Gemological Institute of America (GIA) and the Cultured Pearl Association of America (CPAA), and is also a color specialist certified by TC Color Therapy and Sensational Color. Tom is a GIA-trained Pearl Specialist and also provides professional watch service, performing nearly 300 battery and band replacements each year. Miseki Jewelry has been an authorized retailer of Seiko, Citizen, and Casio for over 30 years.