About Us

STUNNING, STYLISH ,AND
WITHIN REACH

WHO we are

Welcome to KOS, where innovation meets tradition in the world of diamonds. With a legacy spanning over five decades in the natural diamond industry, we are proud to introduce our newest venture: laboratory-grown diamonds.

At KOS, we have always been synonymous with excellence, integrity, and expertise. With our deep-rooted knowledge and experience in the natural diamond trade, we bring an unparalleled level of precision and discernment to the realm of lab-grown diamonds.

For almost 50 years, CELI Jewelry (Parent brand), we have meticulously sourced and curated the finest natural diamonds, earning the trust and admiration from our clientele nationwide. Our journey has been marked by a relentless pursuit of quality, craftsmanship, and customer satisfaction.

Driven by our commitment to innovation and sustainability, we have embraced the revolutionary advancements in diamond technology by partnering with one of the largest labgrown diamond producer in India. Their state-of-the-art facilities boast cutting-edge production capabilities, allowing us to acquire and offer laboratory-grown diamonds with exceptional quality and beauty here in Thailand.

At KOS, every jewelry piece is made in Thailand by the hands of our in-house craftsmanship. It tells a story of precision and passion. From the selection of the finest diamond to the meticulous setting production process, we ensure that each lab-grown jewelry embodies the same brilliance and allure as its natural counterpart.

As pioneers in the lab-grown diamond in Thailand, we are dedicated to setting new standards of excellence in every facet of our business. With KOS, you can trust that you are not only acquiring a stunning piece of jewelry but also contributing to a sustainable and ethical future.

Join us in celebrating the artistry of diamonds reimagined. Welcome to the next chapter of luxury and elegance. Welcome to KOS. ‘Your Kind Of Sparkle’

OUR Belief since
CELI foundation

CELI (Parent company), a family-owned business, was founded in 1975. With over 50 years of experience in the manufacturing and service in natural diamond jewelry here in Thailand, our boutique jewelry brand is operating on the belief that every about to be engaged/married couple deserves a quality engagement and wedding ring that is uniquely their own.

With our commitment to customer involvement at every stage, couples have the opportunity to select their diamonds and settings. Our pricing is flexible, our team are here to assist you in budget allocation, ensuring that regardless of your financial considerations, even 10,000 baht (300 USD) can be enough to celebrate your wedding.

We firmly believe that if you’re going to tie the knot, you should do it with a ring that perfectly suits your needs. This caters to the preferences of the new generation seeking distinctively designed engagement rings at an affordable price that resonates with ‘affordable luxury.’

Our vision

Sparking Sustainable Brilliance

For over 50 years, CELI has been a trusted purveyor of the finest natural diamonds in Thailand. Now, we are thrilled to introduce our new line of laboratory-grown diamonds, which offer the same unparalleled brilliance and beauty, while prioritizing environmental sustainability. Our vision is to redefine the future of luxury jewelry, crafting exquisite pieces that not only dazzle the eye, but also reflect our commitment to a more responsible and ethical industry. By harnessing the power of cutting-edge technology, we are able to offer diamonds of exceptional quality, without the heavy environmental toll of traditional mining.

” Sparkling a sustainable legacy, one lab-grown diamond at a time. “

OUR Mission

CELEBRATING LIFE'S MOMENTS, RESPONSIBLY

At the heart of our new laboratory-grown diamond collection is a dedication to sustainable luxury and ethical practices. We are committed to providing our customers with jewelry that captures life’s most precious moments, while treading lightly on the planet. Through meticulous craftsmanship and innovative manufacturing techniques, we create diamonds of uncompromising brilliance. By choosing lab-grown over mined diamonds, our customers can feel confident that their purchases are contributing to a more sustainable future. As a brand rooted in Thai heritage and expertise, we take great pride in offering exceptional quality, coupled with a profound respect for the environment. It is our mission to make sustainable luxury accessible, empowering our customers to celebrate their milestones with a clear conscience.

“Sparkle with Purpose: Where Tradition Meets Tomorrow”