Lab-Grown Diamond FAQ

No. To the naked eye — and even under a standard jeweler's loupe — lab-grown and natural diamonds are indistinguishable. Only specialized equipment that detects growth patterns can tell them apart.

Lab-grown diamonds typically cost 60-80% less than natural diamonds of equivalent quality. A 1-carat G-VS1 lab-grown diamond may cost $800-1,500 wholesale, while a natural equivalent can run $5,000-7,000.

Prices vary by 4C parameters and market conditions. Contact us for current wholesale pricing on specific specifications.

CVD (Chemical Vapor Deposition) grows diamonds layer by layer in a plasma reactor. Produces Type IIa diamonds (the purest type) with higher clarity potential. Takes 2-4 weeks per stone.

HPHT (High Pressure High Temperature) mimics earth's natural diamond-forming conditions. Typically produces D-F color grades more consistently.

Kunlun Growth sources both. CVD is generally preferred for larger stones (1ct+), while HPHT excels in colorless grades.

It depends on your market. CVD produces purer Type IIa diamonds ideal for large investment-grade stones. HPHT produces D-E-F colors more reliably, making it preferred for colorless jewelry. For most commercial applications, both produce excellent diamonds. We help you match the right technology to your target market and price point.

Yes. All diamonds sourced through Kunlun Growth come with GIA or IGI certification. GIA is the strictest standard worldwide. IGI pioneered lab-grown diamond grading and offers faster turnaround. Both verify the 4Cs and confirm laboratory origin.

Both GIA (gia.edu/report-check) and IGI (igi.org/verify) offer free online certificate verification. Simply enter the report number from the certificate. We provide verification guidance with every order and encourage buyers to verify independently before accepting delivery.

Lab-grown diamonds have a significantly smaller environmental footprint than mined diamonds — no large-scale excavation, less mineral waste, and less water per carat. They do require substantial energy (especially HPHT). Many manufacturers in our Henan network are transitioning to renewable sources. We can connect you with suppliers meeting specific sustainability certifications.

Lab-grown diamonds are consumer goods, not investment assets. Their resale value is significantly lower than purchase price — similar to most manufactured luxury products. If investment is a priority, we'll be honest: natural rare-color diamonds are the better vehicle. If your goal is maximum beauty per dollar, lab-grown is unbeatable.

Flexible. Sample orders start from a single stone for quality evaluation. Wholesale pricing typically starts at 1 carat total weight — we can consolidate smaller orders. Finished jewelry MOQs depend on design complexity. Tell us what you need and we'll find a solution.

Loose diamonds from inventory: 7-14 business days.
Custom specifications / large orders: 3-5 weeks (production + certification).
Finished jewelry: 4-6 weeks from design approval.
All shipments fully insured with tracking. Global delivery via FedEx, DHL, and Brinks for high-value orders.

Pricing is driven by the 4Cs:

• Carat: Price jumps at 0.5ct, 1.0ct, 1.5ct, and 2.0ct thresholds. A 0.9ct can be 15-20% cheaper than a 1.0ct of identical quality.
• Color: D-F command the highest premium; G-H is the sweet spot for commercial jewelry.
• Clarity: VS1-VS2 offers the best value — eye-clean at a reasonable price.
• Cut: The most underrated factor. Excellent cut can add 10-15% to price but dramatically improves brilliance.

Additional factors: certification lab (GIA carries a premium), CVD vs. HPHT, and order volume. Request a quote for your specs.

Every stone is inspected by our quality team before shipping. If a diamond does not match its certificate, we offer full replacement or refund. Wholesale orders: 7-day inspection period from delivery. Custom orders: non-refundable but guaranteed to meet agreed specifications. All shipments are fully insured against transit loss or damage.

Three things:

1. Henan direct. We're connected to the world's largest lab-grown diamond production base — no intermediaries, factory-direct pricing.
2. Military-grade service. Discipline, precision, and reliability in every order. We treat your procurement like a mission.
3. Dual model. Plan A (supply chain integration, 5-8% service fee) for buyers who want a sourcing partner. Plan B (finished jewelry direct sales) for retailers who need ready-to-sell products.

Our supply network is centered in Henan Province, China — specifically the Zhengzhou, Nanyang, and Zhecheng industrial clusters. This region produces over 50% of the world's lab-grown diamonds. We've personally vetted manufacturers across all five major industrial groups in the region, assessing production capacity, quality consistency, pricing, and delivery reliability.