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About Us

About Us





three x seven Jewelry is a San Francisco-based sustainable jewelry brand sold globally online that uses materials with low environmental impact and systems that contribute to society, based on the concept of "coexistence of creativity and sustainability".

Our mission is to make sustainable social change and tackle the social issues such as biodiversity, ocean pollution, deforestation, natural resource depletion, greenhouse gases, education, health, poverty, and working conditions by delivering beautiful, high-quality jewelry pieces made with sustainable manufacturing practices and ethically sourced material directly to our customers at a fair price point.

We are not only pursuing our own profits, but are also trying to be able to be part of the solution to the world's various environmental and social issues.

It all begins with the material. We are dedicated to exclusively using materials that are eco-friendly for our entire line of products and packaging.

This is what we promise to deliver, and this is what you deserve. Together we can make a change that will last.



Handcrafted in SF Bay Area Studio



Our main jewelry studio is located in San Francisco Bay Area - Most of our beautiful jewelry pieces are handcrafted here locally!

Our sourcing team is very persistent in finding the right partners - We only partner with suppliers and manufacturers who adhere to strict protocols in regards to the sourcing of both lab-created and mined gemstones.  


Corporate Responsibility

We are committed to conducting all operations in the most socially responsible manner possible

At three x seven jewelry, we are committed to ethical sourcing and environmental sustainability in all aspects of our operations.

This includes

  • Using 100% recycled metals in our manufacturing processes.
  • Using fair-trade materials to improve the lives of workers and their working environment.
  • Using no-conflict diamonds and gemstones.
  • Using recyclable, biodegradable, and ECO-certified packaging
  • Supporting activities for organizations engaged in environmental activities and solving social problems.

By supporting ethical suppliers and every facet of fair trade jewelry, we believe we can make a difference in our communities. And just as we are committed to bettering the global jewelry industry, we are committed to making our own local community a better place.



The outstanding creativity of our jewelry designs reveals the precise artistry of our craftspeople.

three x seven Jewelry is designed and fabricated in San Francisco CA and Lafayette LA, using engineering, technology and old world jewelry making techniques. We create made to order fine quality jewelry not available in mass produced, high volume jewelry manufacturing. All three x seven Jewelry is guaranteed to be made of the highest quality materials and jewelry fabrication, and is designed to last a lifetime. We offer a range of products: bridal jewelry, wedding bands, and fine jewelry.



Meet the Founder of three x seven Jewelry



Asuka Saito


Born in Sapporo/Hokkaido, Japan. Moved to the U.S. in 2005.

While attending San Francisco State University, she studied psychology, color science, and gemology. While gaining experience at a jewelry store in San Francisco, she learned the basics of jewelry metal smithing under Alan Revere and Nyya Lark, and obtained jewelry professional certifications from the Gemological Institute of America.

As a jewelry artist, she began creating original designs and won numerous awards including the Grand Prize at international design contests held in the United States, Japan, and Italy. She has exhibited her original works at art events and museums around the world, including the United States, Europe, China, India, and Japan. Her work has been featured in various media, both domestic and international. She has been selected to be a member of the jury for the 5th consecutive year since 2017 at the annual international design contest (A' Design Award & Competition) held in Italy.

After working in sales at a jewelry store in San Francisco, she became the general manager and was in charge of direction including purchasing, planning, sales promotion, and public relations. After that, she became completely independent taking giving birth as an opportunity and started her own business.

She launched three x seven Jewelry, a sustainable jewelry brand that uses materials and mechanisms with less environmental impact to contribute to solving environmental and social issues, which she had envisioned for many years.

We are not only pursuing our own profits, but are also trying to be able to be part of the solution to the world's various environmental and social issues.




Company Profile
Company Name: AT Creations, LLC
Representative: Asuka Saito
Office: 905 Liberty St. Ste 3 El Cerrito, CA 94530 USA
Established: Mar 12, 2018