LAB-GROWN DIAMONDS FROM MELEE TO 20 CARATS
CERTIFIED LAB-GROWN DIAMONDS, PRECISION CUSTOM CUTTING AND B2B SUPPLY FROM GUANGZHOU, CHINA
From precision calibrated melee diamonds to exceptional certified lab-grown diamonds up to 20 carats, YANLING LAB DIAMONDS B2B supplies loose diamonds and bespoke cut stones for fine jewelry manufacturers, diamond wholesalers, retail brands, independent ateliers, and private custom clients worldwide.
Explore our extensive inventory of CVD and HPHT diamonds across classic white D–J color grades and an exquisite spectrum of fancy chromatic colors.
LAB-GROWN DIAMONDS FOR EVERY JEWELRY REQUIREMENT
From precision calibrated micro melee for pavé and luxury tennis bands to significant centerpieces for high jewelry.
PRECISION MELEE SIZE CATEGORIES
Our loose melee diamonds are sorted with high-precision sieves to guarantee consistent millimeter dimensions, uniform table percentages, and matching color/clarity grades across production lines.
APPLICATIONS: PAVÉ · MICRO PAVÉ · HALO SETTINGS · TENNIS BRACELETS · ETERNITY BANDS · BRIDAL JEWELRY
LAB-GROWN DIAMONDS FROM 1 TO 20 CARATS
Our inventory and sourcing capabilities cover lab-grown diamonds from small accent stones to large-format center stones up to 20 carats, subject to shape, color, clarity and availability.
CARAT WEIGHT SCALE & EVALUATION
Every stone is cut to ideal optical proportions, maximizing fire, light refraction, and scintillation. Available with full IGI / GIA / GCAL certification and laser inscription.
| CARAT RANGE | TYPICAL APPLICATION |
|---|---|
| 1–2 CARATS | Classic Solitaire Engagement Rings |
| 2–3 CARATS | Premium Bridal & Fine Trilogy Rings |
| 3–5 CARATS | Statement Jewelry & Red Carpet Pendants |
| 5–10 CARATS | Luxury Cocktail Rings & High Jewelry |
| 10–20 CARATS | Bespoke Museum & Royal Commissions |
EVALUATION METRICS: CARAT WEIGHT · COLOR · CLARITY · CUT · POLISH · SYMMETRY · FLUORESCENCE · MEASUREMENTS · GROWTH METHOD · CERTIFICATION · LASER INSCRIPTION
EVERY MAJOR DIAMOND SHAPE
PRECISION FACETED ACROSS 12 MAJOR DIAMOND GEOMETRIES FOR MAXIMUM LIGHT SCINTILLATION.
PRECISION CUTTING STANDARDS
Whether your clients prefer the timeless optical brilliance of a 57-facet Round Brilliant, the elegant elongation of an Oval or Marquise, or the architectural depth of an Emerald step cut, our lapidary facilities maintain tight tolerances across table width, depth percentage, and symmetry.
ROUND BRILLIANT
The classic choice for maximum brilliance and timeless jewelry design.
OVAL
Elegant elongated proportions with exceptional finger coverage.
CUSHION
Soft corners combined with a romantic and luxurious appearance.
EMERALD
Clean step-cut facets designed to emphasize clarity and sophistication.
RADIANT
A brilliant-cut design combining the elegance of emerald with intense sparkle.
PEAR
A distinctive teardrop shape for elegant rings, earrings and pendants.
MARQUISE
An elongated silhouette designed for dramatic finger coverage.
PRINCESS
Modern square geometry with strong brilliance.
ASSCHER
Architectural step-cut faceting with an Art Deco character.
HEART
A symbolic shape for romantic and bespoke jewelry.
BAGUETTE
Linear step-cut diamonds for contemporary and geometric jewelry.
TRILLION / TRILLIANT
A triangular brilliant-cut option for side stones and modern designs.
FANCY CUT & CUSTOM DIAMOND CUTTING
BEYOND STANDARD SHAPES
YANLING provides custom diamond cutting solutions for jewelry designers and professional buyers looking for distinctive proportions and proprietary shapes.
FANCY COLORED LAB-GROWN DIAMONDS
Discover laboratory-grown diamonds in a broad spectrum of sophisticated colors, from subtle champagne and warm yellow tones to vivid pink, blue, green, red and other fancy-color options.
CHROMATIC PURITY & STABILITY
Our fancy colored lab-grown diamonds are created through controlled lattice trace elements (such as boron for blue, nitrogen for canary yellow, and post-growth lattice treatment for vivid pink and red). They offer exceptional color saturation and thermal stability for fine jewelry settings.
FANCY PINK
FANCY BLUE
FANCY YELLOW
FANCY GREEN
CHAMPAGNE
BLACK DIAMOND
* COLOR AVAILABILITY MAY VARY ACCORDING TO GROWTH METHOD, TREATMENT, SIZE AND INDIVIDUAL STONE CHARACTERISTICS.
PREMIUM WHITE LAB-GROWN DIAMONDS & TRANSPARENT PRICING
CHOOSE YOUR IDEAL DIAMOND SPECIFICATION WITH DIRECT B2B WHOLESALE PRICING
COLOR & CLARITY SCALE
Filter through D–F colorless grades to near-colorless G–J, and clarity grades from Flawless (FL/IF) down to eye-clean SI1/SI2.
CERTIFIED LAB-GROWN DIAMONDS & ONLINE SOURCING
For customers requiring independent documentation, selected lab-grown diamonds can be supplied with grading reports from recognized gemological laboratories, subject to stone specifications and availability.
INTERNATIONAL GEMOLOGICAL INSTITUTE
Comprehensive 4Cs grading report, laser inscription verification, and growth method identification.
GEMOLOGICAL INSTITUTE OF AMERICA
The global benchmark in gemological grading with LGDR dossiers and online verification.
GEM CERTIFICATION & ASSURANCE LAB
8X ultimate certification featuring direct optical symmetry assessment and guaranteed grading integrity.
VERIFY BEFORE YOU BUY
Certificate details should always be verified through the issuing laboratory before purchase. We provide high-resolution macro video clips and certificate scans matching the girdle laser serial number.
VERIFY STONE ON WHATSAPPPROFESSIONAL B2B DIAMOND SUPPLY FROM GUANGZHOU, CHINA
Direct supply advantages from China's primary diamond trade and jewelry manufacturing capital.
CHINA DIAMOND FACTORY SUPPLY
Direct access to major CVD and HPHT crystal growth facilities with extensive rough inventories and stable pricing.
JEWELRY MANUFACTURING & SETTING
Full jewelry workshop capabilities including 9K/14K/18K gold and platinum casting, micro-pavé setting, and custom mounting.
B2B PARCEL & CONTINUITY SUPPLY
Consistent, repeatable calibrated parcels for jewelry wholesalers, retail chains, and private-label brands worldwide.
PROFESSIONAL SOURCING
Extensive network of crystal growth labs.
CUSTOM CUTTING
Proprietary and modified facet diagrams.
B2B SERVICE
English-fluent diamond specialists.
GLOBAL LOGISTICS
Fully insured door-to-door air courier.
B2B WHOLESALE & CUSTOM SOLUTIONS
SERVING GLOBAL JEWELRY BUSINESSES ACROSS NORTH AMERICA, EUROPE, AND THE MIDDLE EAST.
TAILORED PROCUREMENT PROGRAMS
- ✔ JEWELRY MANUFACTURERS & CASTING HOUSES
- ✔ REGIONAL DIAMOND WHOLESALERS
- ✔ RETAIL JEWELRY CHAINS & SHOWROOMS
- ✔ ONLINE & E-COMMERCE JEWELRY BRANDS
- ✔ PRIVATE LABEL LABELS & ATELIERS
- ✔ BESPOKE RETAIL CUSTOM CLIENTS (1CT–20CT)
HIGH JEWELRY & 10–20CT
Supplying UAE, Saudi Arabia, Qatar, Kuwait, Bahrain, and Oman with large center stones, fancy colors, and high jewelry.
USA & CANADA
Certified bridal center stones, elongated ovals, radiants, and volume calibrated melee.
UK & CONTINENTAL
Step-cut emeralds, asschers, precision millimeter calibrated sieve melee, and ethical documentation.
YOUR DIAMOND SPECIFICATION, OUR SOURCING SOLUTION
SUBMIT: SHAPE · CARAT · COLOR · CLARITY · CUT · CERTIFICATION · QUANTITY · BUDGET · DELIVERY REQUIREMENT
WHY CHOOSE YANLING LAB DIAMONDS B2B?
WIDE SIZE RANGE
From tiny melee diamonds to large stones up to 20 carats.
MULTIPLE SHAPES
Round and fancy shapes for traditional and contemporary jewelry.
CUSTOM CUTTING
Special proportions and non-standard shapes available for qualified requirements.
COLORED DIAMONDS
Multiple fancy-color laboratory-grown diamond options.
CERTIFICATION OPTIONS
Independent grading documentation available for qualifying stones.
B2B + RETAIL CUSTOM
We support both professional wholesale buyers and selected custom retail requirements.
WHAT OUR CUSTOMERS SAY
28 FEEDBACK RECORDS FROM GLOBAL FINE JEWELRY PROFESSIONALS
“The diamond specifications were clearly presented and the communication was professional.”
“We needed matched oval diamonds for a bridal collection and received very useful sourcing support.”
“The custom cutting service was particularly helpful for our new jewelry designs.”
“Good communication throughout the sourcing process.”
“We were looking for larger lab-grown center stones and received several suitable options.”
“The actual diamond photos and videos made the selection process easier.”
“We appreciate the detailed specification information.”
“The team helped us compare different shapes and proportions.”
“Our order required specific calibrated sizes, and the sourcing team understood the requirement.”
“Professional B2B communication and good attention to specifications.”
“We were sourcing fancy-color lab-grown diamonds for a private collection.”
“The custom pear-shaped diamond options were very useful for our design.”
“Clear communication about diamond grades and certification.”
“We needed matched stones for earrings and received suitable selections.”
“The team understood our requirements for larger center stones.”
“The range of diamond shapes gave our designers more options.”
“We appreciated the professional handling of our custom sourcing request.”
“The information provided before ordering was detailed and easy to understand.”
“We were able to source diamonds according to specific carat and clarity requirements.”
“Good support for our private-label jewelry sourcing project.”
“The fancy-cut selection was suitable for our contemporary collection.”
“Communication was responsive and the diamond specifications were clearly discussed.”
“We were looking for colored lab-grown diamonds and received useful options.”
“The matched diamond service helped us with a new jewelry collection.”
“We value the flexibility of ordering according to our exact diamond specifications.”
“The team provided useful guidance when comparing different diamond shapes.”
“A professional approach to B2B diamond sourcing.”
“The custom diamond sourcing process was straightforward and well communicated.”
FREQUENTLY ASKED QUESTIONS ABOUT LAB-GROWN DIAMONDS & CUSTOM JEWELRY
1. WHAT ARE LAB-GROWN DIAMONDS?
Lab-grown diamonds are real diamonds produced through controlled technological processes such as CVD or HPHT. They have the same basic crystal structure and chemical composition as natural diamonds.
2. DO YOU SUPPLY LAB-GROWN DIAMONDS UP TO 20 CARATS?
Yes. We can source and supply large lab-grown diamonds up to 20 carats, subject to shape, color, clarity and current availability.
3. DO YOU SELL MELEE DIAMONDS?
Yes. Our product range includes small melee diamonds in multiple calibrated sizes for pavé, halo, tennis and other jewelry applications.
4. WHAT DIAMOND SHAPES ARE AVAILABLE?
Round, oval, cushion, emerald, radiant, pear, marquise, princess, asscher, heart, baguette, trillion and other fancy/custom shapes.
5. CAN YOU PRODUCE CUSTOM DIAMOND SHAPES?
Custom cutting can be arranged for qualified projects according to required dimensions, proportions and design specifications.
6. DO YOU OFFER COLORED LAB-GROWN DIAMONDS?
Yes. Options may include pink, blue, yellow, green, champagne, brown, red, orange, purple and black, depending on availability.
7. CAN DIAMONDS COME WITH CERTIFICATES?
Yes. Certification is available for qualifying stones according to the customer's requirements and stone specifications.
8. WHICH LABORATORIES CAN GRADE THE DIAMONDS?
Depending on the diamond and order requirements, grading reports may be available from laboratories such as IGI, GIA or GCAL.
9. CAN I VERIFY THE CERTIFICATE?
Yes. Customers should verify grading reports through the issuing laboratory's official verification system.
10. CAN I SEE THE ACTUAL DIAMOND BEFORE ORDERING?
For qualifying orders, actual diamond photos, videos and available grading information can be provided for evaluation.
11. DO YOU ACCEPT WHOLESALE ORDERS?
Yes. We primarily serve B2B customers including jewelry manufacturers, wholesalers, retailers, designers and jewelry brands.
12. DO YOU ACCEPT SMALL CUSTOM ORDERS?
Selected retail and custom-jewelry requirements can also be considered depending on the stone and specifications.
13. CAN YOU PROVIDE MATCHED DIAMOND PAIRS?
Yes. Matched pairs and suites can be sourced according to size, shape, color, clarity and proportion requirements.
14. CAN YOU SUPPLY CALIBRATED DIAMONDS?
Yes. Calibrated sizes can be requested for jewelry manufacturing projects.
15. WHAT COLORS OF WHITE DIAMONDS ARE AVAILABLE?
Depending on inventory, white lab-grown diamonds can be available across a broad range from high colorless grades to lower color grades.
16. WHAT CLARITY GRADES ARE AVAILABLE?
Availability may include FL, IF, VVS, VS and SI grades, depending on carat, shape and current inventory.
17. WHAT GROWTH METHODS ARE AVAILABLE?
Laboratory-grown diamonds are commonly produced using CVD or HPHT technology. The specific growth method can be confirmed for qualifying stones.
18. CAN YOU SOURCE LARGE 10-CARAT DIAMONDS?
Yes. Large stones such as 10-carat lab-grown diamonds can be sourced according to required specifications and availability.
19. CAN YOU SUPPLY 15-CARAT OR 20-CARAT DIAMONDS?
Yes, large stones in this range may be sourced for luxury and bespoke jewelry projects, subject to specifications and availability.
20. DO YOU SUPPLY EUROPE?
Yes. We work with buyers serving European jewelry markets.
21. DO YOU SUPPLY THE UNITED STATES?
Yes. We support professional jewelry and diamond buyers in North America.
22. DO YOU SUPPLY MIDDLE EASTERN COUNTRIES?
Yes. We support customers in markets including the UAE, Saudi Arabia, Qatar, Kuwait, Bahrain and Oman.
23. CAN YOU SUPPORT PRIVATE-LABEL JEWELRY BRANDS?
Yes. We can support diamond sourcing requirements for private-label jewelry businesses and designers.
24. HOW DO I REQUEST A QUOTATION?
Select your parameters in our interactive calculator below or message us directly on WhatsApp with your target specifications.
TELL US YOUR SPECIFICATION. WE'LL HELP YOU SOURCE & CRAFT IT.
Whether you need 0.8 mm Melee Diamonds, 2 Carat Oval Diamonds, 5 Carat Emerald Diamonds, 10 Carat Lab-Grown Diamonds, 15–20 Carat Luxury Center Stones, Fancy Color Diamonds, Custom Fancy Cuts, or Full-Category 9K/10K/14K/18K Gold & PT950 Platinum Custom Jewelry Manufacturing—our team in Guangzhou is ready to assist you.
K-GOLD & PLATINUM CUSTOM JEWELRY MANUFACTURING
GUANGDONG YANLING TRADING CO., LTD
FULL-CATEGORY MANUFACTURING CAPABILITIES
From 3D CAD modeling and wax printing to master hand-setting, laser hallmarking, and final rhodium polishing. We support both single-piece retail bespoke commissions and high-volume B2B wholesale private-label production.
HEAD OFFICE ADDRESS:
Room 420, No. 58 Zhuji Road, Tianhe District, Guangzhou, Guangdong, China
DIRECT WHATSAPP DESK: +86 13418431397
BUSINESS EMAIL: sale@yldiamond.com
FINE JEWELRY & DIAMOND CALCULATOR
SELECT YOUR SPECIFICATIONS & SUBMIT DIRECTLY TO WHATSAPP (+86 13418431397)