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About Wholesale Lab Grown Diamonds

The lab grown diamonds company was founded by virtue of competitive supply chain like cutting-edge lab grown technologies (CVD/HPHT), precision cutting, industrial cluster, standardized quality control, authoritative certificates (IGI/NGTC), adequate inventory, protected profit margins, etc.

Why Choose Us

IGI or NGTC certified loose lab grown diamonds and jewelry;

Handmade fancy-cut lab grown diamonds by master craftsmen;

Knowledgeable diamond concierge and attentive service;

Fast quotations, clear documentation, and responsive support;

Rooted in a steadfast “Quality First” commitment, each item is skillfully handmade to meet rigorous international quality standards. We provide a streamlined journey that includes expert jewelry design, bespoke manufacturing, and reliable, personalized after-sales service.

Who We Are

Wholesale Lab Grown Diamonds is an official website owned by a manufacturer or supplier who dedicated in loose lab grown diamonds wholesale, colored lab grown diamonds wholesale, lab grown diamond jewelry wholesale, lab grown gemstones wholesale (lab grown ruby, sapphire, emerald), etc. The lab grown diamond company also excels in luxurious jewelry customization like rings, earrings, bracelets, pendants, necklaces and jewelry sets according customers ideas.

Our Advantages

Custom lab diamond jewelry on demand;
Professional and outstanding cutting and polishing technologies;
Professional design team and skillful craftsmen;
Superior physical, chemical and optical properties as mined diamonds;
100% Ethical & Eco-Friendly Lab Diamonds.

Diamond Cutting & Polishing Factory

All rough lab grown diamonds are cut and polished following the highest standards of craftsmanship. Due to fine workmanship from a core of skilled craftsmen, our products have been exported to more than 30 countries, becoming popular across global and local markets. Each stone went through several steps of quality control. Loose stones offer high clarity, ideal geometry and vibrant fire, making finished jewelry stunning in every detail.

lab diamond structure inspection for cutting

10+ Years of Experience

Specialize in a full range of lab grown diamonds and colored gemstones with a decade of dedicated experience.

Professional Team

Capable of handling fancy cuts, complex designs, micro-pavé and milgrain. Precise settings, smooth polishing, even plating, free of burrs, porosity and deformation.

Expertise in Prototyping & Design

Professional 3D modeling, accurate design restoration, optimized structure for better durability and texture.

Great Teamwork & Responsive Communication

Work well with cross-department teams with professional communication, prompt response and in-time feedback.

Jewelry Setting Factory

Our Mission

Our mission is to make premium lab grown diamonds accessible to the global jewelry trade — without compromise on quality, ethics, or reliability. We aim to empower our partners with diamonds that reflect modern values and modern market demands.

Partner With Us

Whether you are a jewelry brand scaling production, a wholesaler expanding inventory, or a retailer transitioning to lab grown diamonds, Wholesale Lab Grown Diamonds is your reliable partner.

The factory is equipped with a series of professional modern equipment for high-quality loose lab grown diamonds and finish touch of luxury jewelries, such as CNC wax carving & precision casting machines, Laser welding & laser engraving equipment, automatic polishing & vacuum plating machines, and professional gem and metal test instruments.

From design conception to finished products, each process is well under management of designers and skillful craftsmen. All design papers, production details, procurement quantity will be kept confidential. No matter you are looking for timeless classic items or modern statement piece, we are one of your best choices. It’s a pride to offer a wide range of stunning and exclusive options of lab grown diamonds and gemstones. Contact us right now and specify customization requirements. We’ll strives to delivery satisfying finished pieces.

Authoritative Third-Party Certificates

Discover jewelry that shines with true authenticity and brilliance. Our stunning gemstone selections are backed by trusted certifications from IGI, GRC, NGTC and NGIC, ensuring exceptional quality and refined elegance for every piece.
Contact us today to receive our latest wholesale price and inventory details.

GRC

GRC

GRC

GRC

Share Your Ideas Or Design

Share Your Ideas Or Design

What Our Clients Say

We custom jewelry manufacturers have served over 100,000 customers from all over the world, with over 99% positive feedbacks

Leave A Message

The first thing Tianyu Gems lab grown diamond manufacturers do is meeting with our clients and talk through their goals on a future project. During this meeting, feel free to communicate your ideas and ask lots of questions.