STUNNING, STYLISH ,AND
WITHIN REACH
WHO we are
Discover KOS Jewelry, an exclusive fine jewelry destination nestled inside CELI on the 1st Floor of CentralWorld Bangkok. Backed by CELI’s prestigious 50-year heritage in natural diamonds, precious gemstones, and master craftsmanship, KOS Jewelry reimagines luxury for the modern generation.
We cater to forward-thinking couples seeking distinctive, non-traditional wedding bands and personalized engagement ring design services at an accessible price point. As a pioneer introducing sustainable lab-grown diamonds to Thailand, KOS Jewelry blends ethical innovation with unmatched design aesthetics.
Every creation—from everyday lab-grown diamond jewelry to bespoke bridal pieces—features independently certified stones with IGI diamond certificates. Our gemological experts are dedicated to helping you craft a radiant, one-of-a-kind ring that reflects your personal love story without compromising on quality or budget.
Visit KOS Jewelry to view our curated collection and compare diamonds side by side. Our certified specialists are ready to guide you in finding or custom-designing the perfect ring for your unique love story.
OUR Belief since
CELI foundation
Founded in 1975, CELI (the parent house of KOS Jewelry) brings over five decades of mastery in fine jewelry manufacturing, diamond curation, and bespoke craftsmanship. Our foundation rests on a singular belief: every couple deserves a high-quality engagement ring and wedding band that tells their authentic, distinctive love story.
KOS Jewelry translates CELI’s 50-year legacy into a modern vision of “Accessible Luxury.” We break conventional retail barriers by inviting couples into an interactive co-creation journey. From hand-selecting individual diamonds to customizing every curve of the band, we ensure your ring is a true reflection of your personal aesthetic and values.
Transparent Budgeting & Tailor-Made Design
We believe exceptional jewelry should celebrate your milestone without financial strain. Our gemological specialists work alongside you to align beauty, proportion, and budget.
Flexible Budget Allocation: Whether your celebration begins with a curated budget in the ten-thousand baht range or beyond, our specialists optimize cut, carat, and setting options to deliver maximum brilliance within your comfort zone.
Hands-On Diamond Selection: Compare cut performance, color grades, and clarity under magnification with full certification transparency.
Master Craftsmanship: Every bespoke ring combines five decades of CELI’s artisanal bench-jeweler heritage with modern, minimalist design aesthetics.
Our vision
Sparking Sustainable Brilliance
At KOS Jewelry, our mission is to reshape the modern jewelry landscape through high-quality, ethically sourced, and sustainable lab-grown diamonds. We bridge the gap between uncompromising elegance and environmental responsibility, empowering conscious consumers to celebrate life’s milestones with authenticity and purpose.
We believe true luxury should not come at the expense of our planet. By pairing fine jewelry design with innovative diamond-growing technology, we provide exquisite lab-grown diamond collections at an honest, accessible value—ensuring you never have to choose between beauty, quality, and social responsibility.
The Four Pillars of Our Sustainable Commitment
100% Chemically & Optically Identical Diamonds: Pure crystallized carbon exhibiting identical brilliance, fire, and durability (hardness 10) to mined diamonds, verified with international certifications from IGI and GIA.
Ethical, Conflict-Free Sourcing: Zero mining disturbance, lower carbon footprint, and complete traceability that safeguard human rights and ecosystems.
Transparent Value: Honest pricing models and open gemological disclosures that place client confidence at the forefront of every purchase.
Future-Forward Craftsmanship: Pairing sustainable diamonds with recycled precious metals (18K Gold and Platinum) for fine jewelry built to last a lifetime.
” Sparkling a sustainable legacy, one lab-grown diamond at a time. “
OUR Mission
CELEBRATING LIFE'S MOMENTS, RESPONSIBLY
“Sparkle with Purpose: Where Tradition Meets Tomorrow”
WHY CHOOSE US
Reasonable Price
Exceptional quality meets affordability. We find exquisite diamonds at reasonable prices. Experience brilliance without compromise. Choose us for unmatched value.
experience team
Benefit from our experienced team. Our knowledgeable professionals are dedicated to guiding you through the process, ensuring you find the perfect piece tailored to your preferences.
Quality Products
Discover excellence with our premium selection. We pride ourselves on delivering quality products that stand the test of time.
Elevate your experience with us.
Secure Payment
Experience peace of mind with our secure payment options. We prioritize the safety of your transactions, ensuring a reliable and worry-free shopping
experience.
sustainability
Embrace sustainability with us. Our commitment to eco-friendly practices ensures you not only get beautiful jewelry but also contribute to a greener, more responsible world.
friendly support
Experience the difference with our dedicated and experienced team, committed to providing you with top-notch customer support. Feel secure with our friendly and responsive assistance. Your satisfaction is our priority.
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