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Lab Diamond Sourcing

China-based B2B sourcing partner

China-Based Lab-Grown Diamond Sourcing for Jewelers and Jewelry Brands

For professional buyers sourcing loose diamonds, matched goods, custom cuts and coordinated small-batch jewelry production through China.

Send a Sourcing Request
Illustrative loose laboratory-grown diamonds arranged for professional sourcing review
IGI and GIA report preferences
Report and inscription checks
Loose stones, matched goods and jewelry coordination
International shipment coordination

Built for professional jewelry buyers

The buying context determines which specifications, evidence and production records matter.

Illustrative jeweler reviewing loose laboratory-grown diamonds with a loupe and tweezers

Independent jewelers

Source center stones, side stones and repeat specifications for professional orders.

Illustrative bridal design desk with a ring setting, diamond tray, sketch and caliper

Custom bridal studios

Coordinate stones, CAD and production requirements for custom bridal programs.

Illustrative small jewelry collection arranged for a professional brand review

Jewelry brands

Plan small-batch styles, stone standards, QC and branded packing.

Online jewelry retailers

Build documented stone and product specifications for repeatable listings.

Wholesale buyers

Compare current supply against grading, matching, quantity and delivery requirements.

Core sourcing services

Illustrative assortment of loose laboratory-grown diamonds arranged for wholesale selection

Wholesale loose diamonds

Source by shape, carat, dimensions, grading, report preference, quantity and jewelry use.

Review criteria
Illustrative matched oval pair and graduated melee arranged for comparison

Matched goods

Prepare pair, side-stone and melee requirements using measurable and visual tolerances.

Review criteria
Illustrative custom jewelry coordination desk with settings, stones and design drawings

Custom jewelry coordination

Connect stones, CAD approval, sampling, production, quality checks, packing and shipment.

Review criteria
Illustrative laboratory-grown diamond measurement and verification workspace

Quality and verification

Review reports, inscriptions, physical dimensions, visual media and shipment records.

Review criteria

Differentiated sourcing capabilities

Five-step sourcing process

Illustrative laboratory-grown diamond sourcing workflow with review documents, stones and inspection tools
  1. 01

    Submit the specification

    Identify fixed requirements, preferred ranges and intended jewelry use.

  2. 02

    Review current options

    Compare relevant supply against the same buying brief.

  3. 03

    Check evidence

    Connect reports, inscriptions, dimensions, weight and available media.

  4. 04

    Confirm quotation

    Approve the proposed option, quantity, validity and order terms.

  5. 05

    Complete QC and shipment

    Recheck the confirmed record, packing and destination details.

Current availability

Source by specification

Send the shape, carat or dimensions, color, clarity, grading report preference, quantity and intended use for a current supply check.

Illustrative laboratory-grown diamond measurement and verification workspace

Verification before confirmation

Connect the grading record, inscription, measurements, weight, visual media and physical item before approval.

Review verification steps

Why source through China, Guangzhou and Panyu

Coordinate loose stones, custom cuts and jewelry production through a broader China-based network with access to Guangzhou and Panyu resources.

Review China sourcing
Illustrative China-based sourcing meeting with laboratory-grown diamond trays and inspection tools

Buyer decision questions

Who do you work with?

We work with independent jewelers, custom bridal studios, jewelry brands, online jewelry retailers, wholesalers and other professional jewelry buyers. The sourcing process is designed for B2B specifications, quantity planning, report preferences and production requirements. It is not a direct-to-consumer store, and a website request does not reserve a stone or create a retail sale.

Are you a diamond grower or a sourcing partner?

We are a China-based sourcing and supply coordination service, not a diamond grower and not the owner of every facility involved in a transaction. Our role is to organize buyer requirements, check relevant supply options, coordinate documentation and physical checks, support custom jewelry production communication and prepare confirmed orders for shipment.

Can you source IGI or GIA graded lab-grown diamonds?

Yes, buyers can state IGI or GIA as a grading-report preference. Availability is checked for the exact shape, dimensions, grading and quantity request. Before approval, the report number should be reviewed through the issuing laboratory's official service and compared with the inscription, measurements, weight and physical stone information where applicable.

Can you source CVD and HPHT diamonds?

Buyers may request CVD, HPHT or no specific growth-method preference. The method and any disclosed post-growth treatment should be confirmed from the report or item record for the proposed stone. Growth method alone does not establish quality, price or suitability, so it remains one field within a broader specification and verification process.

Can buyers request custom cuts or matched pairs?

Yes. Custom-cut requests should include a drawing, dimensions, ratio, facet reference, carat target, tolerance, quantity and setting use. Matched-pair requests should identify whether weight means total pair weight or each-stone weight, then define dimensions, outline, grading relationship, visual matching and orientation. Feasibility and current terms are confirmed in writing.

Do you support small trial orders?

Buyers may submit small or trial-order requirements for review. Acceptance depends on the exact stone or jewelry specification, quantity, matching or calibration work, production setup and current supply conditions. A trial request should also state the intended repeat program so the sourcing record can capture useful tolerances if the first order proceeds.

How are shipping, duty and VAT handled?

Shipping method, packing, destination and responsibility transfer are confirmed in the quotation or order record. Duty, VAT, importer registration and resale obligations depend on product classification, origin, destination and the buyer's circumstances. The website does not promise tax-free delivery, and professional buyers should confirm local obligations with their own qualified adviser.

Send the specification that controls the buying decision

Choose the current-availability path for a concise check or use the detailed RFQ for structured specifications and secure files.

Send a Sourcing Request

Request current availability

Send the business context needed for a current supply check.