Welcome to
fine jewelry for the future

Brand Statement Visual

What is the future of beauty?
The answer will be there through your choices.
Choose what excites you
rather than by other people's prejudices.
Live a life that you can be proud of
rather than following the past.
PRMAL embraces your courage
with Lab Grown Diamonds
that are eco-friendly and conflict-free.
Be premium.
Be minimal.
And be ethical.
The choice will make your life beautiful.

Our Story

Sustainable
and Accessible
by Technology テクノロジーでサステナブルジュエリーを身近に

PRMAL's mission is simple: to make ethical, high-quality jewelry accessible.

Most natural diamonds reach you with their origins unknown and a real environmental cost behind them. And with every layer of a complex supply chain, hidden markups quietly stack onto the price. We questioned that lack of transparency—and rethought the industry from the ground up.

By choosing eco-friendly lab-grown diamonds and overseeing everything from production to sale through technology, we strip away the unnecessary costs. The result: exceptional jewelry at a price that's finally fair.

Ethical, high-quality jewelry, made accessible. That belief drives us toward a more sustainable and equitable world.

1% for
the Planet ® 売上金の1%を寄付

We believe that it's crucial not only to create environmentally friendly products, but also to establish a system that allows us to contribute positively. We strive to be a jewelry company that takes a forward-thinking approach to sustainability.

Trees play a vital role in absorbing CO2, a greenhouse gas in the atmosphere, making forest conservation one of the most effective ways to combat climate change. However, it's estimated that around 130,000 square kilometers of the world's forests are lost each year.

To address this issue, PRMAL has been actively involved since its inception as a member of 1% for the Planet ®, a global network of over 4,900 companies worldwide.

In our efforts to give back to the Earth that has nurtured us, we aim to foster a society where the blessings of forests can be sustained and preserved, while simultaneously preventing deforestation in various parts of the world.

Lab-Grown
Diamond

ラボグロウンダイヤモンド

The lab-grown diamonds have the same components as natural diamonds, but they're purer, giving them a brilliant sparkle.

Not only do these diamonds shine bright, but they're also eco-friendly, conflict-free, and a sustainable choice for the future.

the picuture of a lab-grown diamond

Elegance Redefined

引き算の美学

What PRMAL values most is minimalist design that draws out the innate beauty of the materials themselves.

By stripping away unnecessary ornament, we aim to create jewelry that quietly blends into the individuality and daily life of the person wearing it.

For everyday moments and special occasions alike. We hope it becomes a presence you can cherish for years, gracefully complementing any style.

Our product visual

Craftsmanship

Artisan craftsmanship in Kofu

Every piece of PRMAL jewelry is handcrafted one by one by artisans at our workshop in Kofu, Yamanashi, who bring over 30 years of experience.

From stone setting and polishing to the final finish—because jewelry is meant to be worn for a lifetime, we cherish not only the beauty of the materials but also the beauty of the craftsmanship itself.

Craftsmanship visual

True Value

適正な価格

We rethink the entire flow from production to sale, keeping unnecessary costs to a minimum.

In turn, we focus on the beauty of our materials and the precision of our craftsmanship, delivering pieces at a price you can feel good about for their quality.

Fair Price

Founder

“ Aiming for a sustainable society, starting from the jewelry industry. ”

Born into a family of jewelers with a legacy passed down through generations, I was surrounded by fine jewelry from an early age and felt a calling toward this craft. Guided by the belief that jewelry can bring radiance to people's lives, I have always sought to make fine jewelry accessible and bring smiles to as many faces as possible. However, I couldn't help but question the various issues plaguing the jewelry industry.

On a trip to Iceland, I witnessed firsthand the rapidly melting glaciers—a sobering reality that led me to question what could be done to protect this planet and its greatest treasures. It was in this context that I discovered lab-grown diamonds. Convinced that these diamonds could be a catalyst for sustainability in the jewelry industry and a solution to its inherent problems, I teamed up with like-minded individuals to establish PRMAL.

We hope that PRMAL jewelry will become a cherished part of your life, timeless in its appeal and passed down to future generations, giving rise to myriad beautiful stories along the way.

Go Fukushima, Founder & CEO

“ Exploring the future luxury through diamond jewelry. ”

Diamonds and precious gemstones have captivated people for centuries, weaving a long and rich history. Meanwhile, the modern era, with its advancements in technology, has brought about an era of transparency where uncomfortable truths that were once concealed by the industry have come to light.

We believe it is crucial to confront these truths sincerely. Through the beautiful jewelry crafted by PRMAL’s skilled artisans—each piece a collaborative labor of love—we invite you to experience what jewelry should truly represent in the coming age.

Riki Shimma, Co-Founder & CTO

Our Team

Our team is led by two industry front-runners: Go Fukushima, a third-generation jeweler with a wealth of experience in the field, and Riki Shimma, a technology specialist.

Based in Tokyo, our diverse team of experts harnesses cutting-edge knowledge and know-how to create a unique jewelry experience. Comprising specialists from various fields—from art and fashion to finance and technology—we're redefining what jewelry can be.