About Rayonu

Rayonu is China’s leading vertically integrated lab-grown diamond innovator, specializing in cultivation, precision cutting, and luxury jewelry design. With a 4,000+ workforce and state-of-the-art technology, we ethically craft sustainable diamonds that rival natural gems in brilliance and quality.

Lab Production

Advanced HPHT technology replicates Earth’s diamond-forming conditions, producing high-purity, D-to-F color diamonds under ISO-certified eco-friendly processes.

Expert Screening

Master gemologists and advanced tools enforce rigorous 4C grading, with dual verification ensuring <5% defect rate and flawless clarity.

Laser Cutting

India-engineered laser systems achieve 5-micron precision, optimizing rough diamond utilization by 30% and accelerating shaping efficiency.

Hand Polishing

Veteran artisans (20+ years’ experience) employ Antwerp’s 57-facet cut techniques, delivering ideal light refraction and GIA/IGI-certified symmetry.

Jewelry Crafting

Collaborations with Red Dot Design Award-winning teams create heirloom pieces using conflict-free 18K gold/platinum and hypoallergenic settings.

In the spring of 2013, I stood frozen in front of a jewelry store window. The reflection in the glass revealed my white-knuckled grip on a debit card—a 0.3-carat natural diamond ring sparkled like a slice of the Milky Way, yet it cost nearly half a year’s salary. In the end, my longing for a symbol of love outweighed practicality. When the ring slipped onto my wife’s finger, I felt the weight of what diamonds truly represented: not just promises, but the bittersweet compromises ordinary people make for "forever."

Everything changed the day I stepped into a lab, where under a microscope, lab-grown diamonds revealed atomic structures identical to their mined counterparts. "They begin differently but end in the same brilliance," my mentor remarked. In that moment, I glimpsed a revolution: if science could grow stars on Earth, why should we pay a hundredfold for carbon buried deep in the dirt? In fact, we are the largest manufacturer of lab-grown diamonds in China, adhering to the highest standards in production and cutting. This breakthrough inspired the birth of RAYONU—a rebellion against the old ways, preserving every romantic quality of diamonds while stripping away artificial scarcity and status-driven markup.

In our Milan studio, we set diamonds into stackable rings meant to be worn with morning coffee. In Tokyo, 0.5-carat pendants became interchangeable statement pieces for casual wear, and at a Berlin launch, ear cuffs woven with lab-grown gems gleamed like secrets in a model’s hair. No longer locked in safes, these jewels returned to their purest purpose—not reserved for milestones, but meant to illuminate life’s everyday magic. A customer once posted: "Working late in my RAYONU studs, I caught my reflection in the elevator mirror, and suddenly saw myself glowing." That’s the metaphor we’ve woven into our DNA: everyone is a star waiting to ignite, and when diamonds break free from weddings, social hierarchies, and anniversaries, they become a raw declaration—you deserve to crown every ordinary moment.

Today, watching students buy their first carat-length necklaces to celebrate graduation or couples designing full bridal sets on one-month wages, I finally let go of that old ache of "not enough." In RAYONU’s labs, where furnaces never cool, we’re forging a new kind of forever: true luxury isn’t a price tag—it’s making radiance a daily habit. We’re not a substitute for mined diamonds; we’re the rule-breakers rewriting what brilliance means. Here, diamonds stay weightless, yet never compromise on light.

About Rayonu

A Priceless Encounter

The Lab Revelation

Everyday Brilliance

Redefining Luxury

CONTACT US

About Rayonu

A Priceless Encounter

The Lab Revelation

Everyday Brilliance

Redefining Luxury

CONTACT US

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