If you own a lab-grown diamond, there is a better than 50% chance it was born in a massive hydraulic machine in the middle of China's Henan province. While De Beers and major tech companies often get the headlines, the quiet town of Zhecheng in Henan has become the uncontested world capital of diamond growth.
The Cubic Press Advantage
While Western companies like Diamond Foundry focus on CVD technology (using plasma), Henan’s dominance is built on HPHT (High Pressure High Temperature). They use massive, multi-ton Cubic Presses that can generate the extreme geological conditions found 100 miles below the Earth's surface.
Kunlun Growth Quality Promise
Certificates don't tell the whole story. We reject ~35% of diamonds that pass standard IGI inspections but fail our internal checks.
- No Brown/Green Tint: Every stone is compared against our Master Set.
- No BGM (Milkiness): We filter out hazy crystal structures.
- Eye-Clean Guarantee: Real-world visual inspection, not just 10x loupe.
From Abrasives to Gemstones
Henan didn't start with jewelry. For 30 years, they were the world's lead producer of industrial diamond grit used for cutting, drilling, and grinding. In the last decade, they successfully pivoted that mastery of "hard materials" to gemstone-quality diamonds.
Today, the province houses billions of dollars worth of R&D, focused on one goal: Perfection.
Why We Are Based Here
Based in the nearby logistics hub of Shenzhen, we act as the bridge to this powerhouse. Most Henan factories are massive state-owned or multi-generational family enterprises focused on manufacturing, not marketing or customer service. They don't have WhatsApp; they don't speak English; they don't do retail shipping.
We do. We vet their daily production to find the 10% of stones that are truly "Jewelry Grade."
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