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Find Your Ideal Diamond Shape for Next Collection

From classic round cuts to elegant fancy shapes such as oval, cushion, and princess, our diamonds are designed to support a wide range of jewelry styles
and creative designs. Each shape is precisely cut to ensure exceptional brilliance and smooth setting in professional jewelry manufacturing.

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Why Our Lab-Grown Diamonds Stand Out

Discover how our lab-grown diamonds bring exceptional brilliance, clarity, and consistency to jewelry and decorative
applications, helping create products with stronger visual appeal and higher market value.

Extensive Shape & Size Options
Extensive Shape & Size Options
Available in a wide range of diamond shapes and carat weights, our diamonds support different jewelry collections, design concepts, and market preferences.
Exceptional Clarity & Brilliance
Exceptional Clarity & Brilliance
Featuring VVS–VS clarity grades and expertly polished facets, our diamonds deliver the exceptional sparkle, fire, and visual appeal expected in fine jewelry.
Trusted International Certification
Trusted International Certification
Diamonds are available with grading reports from leading institutions such as IGI and GIA. Each stone can also be verified by diamond testers, offering the transparency and assurance buyers need.
Ethically Produced & Sustainable
Ethically Produced & Sustainable
Created in controlled laboratory environments, our diamonds help reduce reliance on mining and provide a more sustainable material choice for modern jewelry brands.
Up to 40% Better Value
Up to 40% Better Value
With the same 100% carbon cubic crystal structure and visual beauty as natural diamonds, lab-grown diamonds can offer savings of up to 40%, helping brands improve margins without compromising quality.
Versatile Across Jewelry Categories
Versatile Across Jewelry Categories
Suitable for rings, earrings, necklaces, bracelets, and custom jewelry collections, they offer flexibility for bridal, fashion, and fine jewelry applications.
Get Samples to Evaluate Quality

Who We Serve

Fashion Jewelry & Luxury Brands
Fashion Jewelry & Luxury Brands
Jewelry brands come to us for diamonds that match their brand identity, quality, ethical standards, and consistency matter most. Engagement rings, bridal sets, signature collections, etc. we stay involved across those lines so their ranges stay production-ready.
Jewelry Manufacturers & Processors
Jewelry Manufacturers & Processors
They specialize in downstream jewelry production, including stone setting, matching, and final jewelry assembly. We supply pre-calibrated and precisely cut diamonds to support efficient manufacturing of rings, earrings, pendants, and bracelets.
Diamond Wholesalers & Distributors
Diamond Wholesalers & Distributors
The diamond distributors sit on very different demand cycles, including independent designers, local jewelry stores, and even large retail chains. We ship bulk parcels and specific cut stones directly from the factory, so they can pull from inventory as needed, without overstocking.
Private-Label Studios & Designers
Private-Label Studios & Designers
Fancy shapes, matched stones, and small runs are what their world is. They build one-off and limited collections under their own label, turning the stones into finished pieces without any cutting setup on their side.
OEM / ODM Project Partners
OEM / ODM Project Partners
At HN LGD TC., we also handle projects that start from stone supply and extend into finished jewelry programs. This usually includes custom assortments, repeated production cycles, and coordinated development for a personalized program.
 
What We Offer
One Stop Lab-Grown Diamond & Jewelry Solutions for Your Brand

As a vertically integrated lab-grown diamond manufacturer, we support jewelry brands, wholesalers, and private-label clients with integrated OEM and ODM development services. From initial concept or specification to diamond production, grading, jewelry manufacturing, and final delivery, we help turn ideas into market-ready products with consistent quality and scalable production.

Customization Options Include:

Diamond Specifications

Shapes, carat sizes, color grades, clarity grades, and custom cutting requirements.

Custom Jewelry Manufacturing

Rings, earrings, pendants, bracelets, and complete jewelry collections.

Matched Stone Supply

Calibrated pairs, production parcels, and layout matching for jewelry manufacturing.

Private-Label Solutions

Custom packaging, branded documentation, and exclusive supply arrangements.

Branded Development Service

Turn your concept into finished diamond programs ready for market launch.

Start OEM Manufacturing Explore ODM Development
Jewelry Design
Henan Lab-Grown Diamond Trading Center
Why Choose HN LGD TC.
Your Integrated Lab-Grown Diamond Manufacturing Hub

Henan Lab-Grown Diamond Trading Center is a vertically integrated manufacturing and trading base located in China's largest lab-grown diamond industrial cluster in Henan. We combine diamond production resources, cutting and polishing capacity, grading and certification support, and jewelry manufacturing capabilities into a coordinated supply system, enabling stable, large-scale production and efficient global delivery.

Learn More About Us Talk to the Factory Directly
80,000+ ct
Loose Diamond Inventory
30,000+ ct
Annual Diamond Capacity
3,000+
Experienced Diamond Craftsmen
200+
Professional Jewelry Designers
45+
Partner Diamond Producers
RMB 15 Billion
5-Year Cumulative Transaction Value
Lab-Grown Diamond Growth Workshops
Lab-Grown Diamond Growth Workshops
Laser Sawing & Shaping Workshops
Laser Sawing & Shaping Workshops
Faceting & Polishing Equipment
Faceting & Polishing Equipment
Inspection & Grading Station
Inspection & Grading Station
Stone Setting Workstations
Stone Setting Workstations
 
Certification & Compliance
You Can Trust

Our lab-grown diamond production is supported by a structured, end-to-end quality control system covering every stage from growth to final inspection. With an in-house grading center, recognized certification partners, and professional inspection equipment, we ensure consistent quality, reliable grading, and fully traceable delivery for global buyers.

Inside Our Quality System
In-House Grading & Certification Center
In-House Grading & Certification Center
A 300㎡ facility with approximately RMB 5 million investment, equipped with professional inspection tools including microscopes, electronic balances, and laser systems.
Authorized Grading Partners
Authorized Grading Partners
We cooperate with IGI, Henan Guojian, and ILC as trusted gemological institutions for grading and inspection support.
Recognized Certification Support
Recognized Certification Support
IGI, GIA, GIL, AGL, and NGTC certificates are available based on market and customer requirements.
Independent Verification System
Independent Verification System
Laser, certificate, and stone matching with full trade documents and traceable records for compliant transactions.
How We Support Your Business Growth
 
Direct Factory Supply

Work with more than 160 suppliers, eliminate middle layers to achieve better pricing and faster sourcing.

 
Full-possess Production

Top-tier manufacturing support from diamond growth to jewelry production under one system.

 
Sample Support

Structured sample available for design and specification validation.

 
Ready Stock Supply

8,000+ ct inventory and design stock for faster order fulfillment.

 
All-day Support

24/7 phone support, with efficient communication and order support across time zones.

 
Global Logistics Support

Export reports, documentation, and shipping coordination for international orders.

 
After-Sales Service

Assistance for order issues, batch review, and long-term brand support.

 
Design & Innovation

Continuous diamond technology innovation with 180 patent applications and 30 published papers.

Frequently Asked Questions

Q1: Are you a direct LGD manufacturer or company?

A: We are a factory-based supplier with integrated production capabilities, covering diamond growth, cutting, polishing, and grading.

Q2: Is a lab-grown diamond a real diamond?

A: Yes. They are 100% real diamonds, completely identical to mined diamonds in their chemical, physical, and optical properties. They are just as hard (10 on the Mohs scale) and possess the same brilliance.

Q3: How are your lab-grown diamonds produced?

A: We grow them using advanced CVD and HPHT technologies in controlled laboratory environments, ensuring consistent crystal structure, clarity, and production stability.

Q4: What is your minimum order quantity (MOQ)?

A: We support flexible MOQ depending on size, shape, and specification requirements, suitable for both trial orders and wholesale procurement.

Q5: How long will my order take?

A: For in-stock loose lab-grown diamonds, lead time is typically 7–15 days. Custom jewelry projects or bulk orders generally require around 30 days, depending on design complexity and production requirements.

Request a Free Quote from HN LGD TC.
Share your requirements for cut, size, color, clarity, and order volume. Our team will respond with pricing, availability, and technical details within 24 hours.
 
Discover More Product Categories

Explore our complete range of lab-grown diamonds, colored gemstones, and finished jewelry for diverse collections,
private-label programs, and wholesale sourcing needs.

Lab-Grown Colored Diamonds
Lab-Grown Colored Diamonds
Lab-Grown Gemstones
Lab-Grown Gemstones
Lab-Grown Diamond Jewelry
Lab-Grown Diamond Jewelry

As one of the most professional lab grown diamonds manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please feel free to wholesale bulk high-end lab grown diamonds made in China here from our factory. Welcome to view our website for more company information.

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