Frequently Asked Questions

We supply both lab grown and natural diamonds. Lab grown inventory includes CVD and HPHT diamonds from 0.50ct to 20ct+. Natural diamonds range from 0.30ct to 10ct+. We also supply calibrated melee under 0.30ct in both lab grown and natural. All available in round brilliant and fancy shapes.

CVD (Chemical Vapor Deposition) diamonds are grown by depositing carbon gas onto a seed crystal. They dominate above 2 carats and suit statement pieces. HPHT (High Pressure High Temperature) diamonds are grown under extreme pressure. They dominate below 1.50 carats with strong colour at lower per-carat cost. Most retailers stock both.

Yes. We supply both from the same operation. Many clients stock natural for high-trust occasions like engagement rings and lab grown for everyday luxury and volume retail. One supplier for your complete diamond inventory.

We supply round brilliant, oval, cushion, emerald, pear, princess, marquise, radiant, heart, asscher, and trillion cuts. Round brilliant and oval are highest-volume stock. Other shapes are available with 5-10 business day lead time. Custom cutting is available for private-label collections.

Lab grown diamonds: 0.50ct to 20ct+. Natural diamonds: 0.30ct to 10ct+. Melee and calibrated accent stones: 0.005ct to 0.30ct. For exceptional stones outside these ranges, we source to order from primary markets based on your specifications.

Yes. We supply calibrated melee in both lab grown and natural, from 0.005ct to 0.30ct. Available in round and princess cuts, calibrated to 0.01mm tolerance on custom orders. Parcels are graded for uniform colour and clarity. Non-certified parcels available for production runs.

Our minimums are flexible. For certified individual stones, there is no minimum. For melee parcels, sample orders start at 5 carats. Production melee orders start at 20 carats. Custom manufacturing starts at 10 pieces per design. We encourage first-time buyers to start with a sample order.

We provide transparent, market-linked pricing updated regularly. Pricing varies by diamond type (lab grown vs natural), method (CVD vs HPHT), carat weight, colour, clarity, and certification. We offer per-stone pricing for larger diamonds and per-carat parcel pricing for melee and volume orders. No hidden markups.

Yes. Sample parcels are available for first-time buyers to test our quality, grading consistency, and logistics before committing to production volumes. Sample parcels are priced at standard wholesale rates, not inflated trial pricing.

Contact us through the form on our website, via email at hello@b2b.diamonds, or on WhatsApp. We discuss your requirements, curate a selection to your specifications, and provide pricing. First orders typically start with a sample parcel to establish quality expectations.

We ship to 30+ countries across North America, Europe, Asia-Pacific, the Middle East, South America, and Africa. All shipments include full export documentation, transit insurance, and tracked delivery. We handle customs compliance for destination countries.

We prepare all required documentation including commercial invoices, packing lists, certificates of origin, Kimberley Process certificates (for natural diamonds), and laboratory certificates. We provide HS code classification and duty rate guidance for your destination country.

Yes. Every shipment carries full transit insurance with value declared at invoice amount. We use specialized diamond logistics carriers with door-to-door or port-to-port delivery options. Tamper-evident security packaging on all shipments.

Stock items ship within 3-5 business days. Custom orders and specific sourcing requests take 10-20 business days. Melee with custom calibration takes 7-10 business days. Rush orders are available for production deadlines at additional cost. Transit time depends on destination.

We provide GIA, IGI, and HRD certifications. IGI is our standard for lab grown diamonds. GIA is recommended for natural diamonds and available on request for lab grown at higher per-carat cost. Every stone ships with its original laboratory certificate.

Yes. All natural diamonds comply with the Kimberley Process Certification Scheme. We source exclusively through established, audited supply channels with full chain-of-custody documentation. Provenance information is available for every stone we supply.

Individual certification is not standard for melee as the per-stone cost often exceeds the stone's value. We provide parcel-level grading documentation covering colour range, clarity range, and calibration specs. Individual certification is available for stones above 0.15ct at additional cost.