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.

Built for professional jewelry buyers
The buying context determines which specifications, evidence and production records matter.

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

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

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

Wholesale loose diamonds
Source by shape, carat, dimensions, grading, report preference, quantity and jewelry use.
Review criteria
Matched goods
Prepare pair, side-stone and melee requirements using measurable and visual tolerances.
Review criteria
Custom jewelry coordination
Connect stones, CAD approval, sampling, production, quality checks, packing and shipment.
Review criteria
Quality and verification
Review reports, inscriptions, physical dimensions, visual media and shipment records.
Review criteriaDifferentiated sourcing capabilities

Custom-cut diamonds
Need an outline that standard supply does not cover?
Define the drawing, dimensions, facet reference and tolerances before first-piece approval.
Review sourcing criteria
Matched pairs
Need two stones to read as one balanced unit?
Compare dimensions, weight basis, outline, grading and face-up pattern together.
Review sourcing criteria
Calibrated melee
Need a parcel that fits a repeat production seat?
State millimeter or sieve range, tolerance, quantity basis and intended setting use.
Review sourcing criteria
Side stones and layouts
Need sides that work with a specific center and CAD?
Plan face-up dimensions, orientation, total width and setting constraints as one layout.
Review sourcing criteria
Small-batch custom jewelry
Need stones and production records coordinated together?
Connect brief, CAD, sampling, production, QC, packing and shipment approvals.
Review sourcing criteriaFive-step sourcing process

- 01
Submit the specification
Identify fixed requirements, preferred ranges and intended jewelry use.
- 02
Review current options
Compare relevant supply against the same buying brief.
- 03
Check evidence
Connect reports, inscriptions, dimensions, weight and available media.
- 04
Confirm quotation
Approve the proposed option, quantity, validity and order terms.
- 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.

Verification before confirmation
Connect the grading record, inscription, measurements, weight, visual media and physical item before approval.
Review verification stepsWhy 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
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.