Submission Procedure

From the moment you bring in a gemstone to its safe return β€” a clear, considered process.

ALGT laboratory reception β€” Antwerp

ALGT laboratory reception β€” Antwerp

Submission Process

Drop-Off of Gemstones or Jewelry

Two ways to entrust your items to ALGT: visit one of our laboratories in person, or arrange a secure, insured courier shipment. Each path follows the same four-step procedure below.

Submission at the Laboratory

No appointment needed

Submission by Courier

FedEx Β· DHL Β· UPS Β· Malca-Amit

  1. 01
    Step 01

    Submission at the Laboratory

    Submit gemstones or jewelry directly at the laboratory reception desk. No appointment is required.

    πŸ‡§πŸ‡ͺAntwerp Laboratory
    Reception Hours
    Monday to Friday, 9:00 AM – 5:00 PM
    πŸ‡¨πŸ‡³Shanghai Laboratory
    Reception Hours
    Monday to Friday, 9:00 AM – 6:00 PM
  2. 02
    Step 02

    Preparing Your Visit

    Make your visit fast and seamless by bringing the right documents and a clear request.

    New Clients

    New clients are kindly requested to complete the registration form and carefully read and sign the applicable terms and conditions prior to submission.

    Identification Requirements

    In accordance with Belgian government KYC (Know Your Client) regulations, a copy of a valid passport or national ID card is mandatory.

    Service Selection

    Please indicate the requested analysis service(s) and preferred report format for your gemstone or jewelry prior to submission.

    Check our services
    Customer Registration Form

    Two convenient ways to obtain your form:

    Download Blank Form

    Print, fill out by hand, sign and bring to the lab β€” or scan and email back.

    Download PDF
  3. 03
    Step 03

    Submission by Courier

    If you are unable to visit in person, gemstones or jewelry may be shipped to the laboratory with declared value and appropriate insurance coverage.

    Shipping Address

    πŸ‡§πŸ‡ͺAntwerp Laboratory
    ALGT BV
    Contact Person
    Mingyue Yang
    Telephone
    +32 3 535 08 88
    Address
    Diamond Plaza Hoveniersstraat 55, Office 9 2018 Antwerp, Belgium
    πŸ‡¨πŸ‡³Shanghai Laboratory
    ALGT Shanghai
    Contact Person
    Cao Ye
    Telephone
    +86 21 6070 4858
    Address
    Room 1201, Ocean Tower No. 550 East Yan'an Road Huangpu District, Shanghai, China

    Recommended Couriers

    We strongly recommend a secure courier service offering insured shipment, such as FedEx, DHL, UPS, Malca-Amit or an equivalent provider.

    FedExDHLUPSMalca-Amit
    πŸ‡¨πŸ‡³

    For shipments within China, SF Express is the recommended provider.

    Required Documentation

    Please include the following documents in your shipment:

    • A note specifying the requested analysis and service.
    • Registration form and copy of passport or ID card (for new clients).
    For shipments originating outside the European Union
    • β–ΈA commercial invoice must be included.
    • β–ΈThe correct HS Code corresponding to the gemstone type must be stated.
  4. 04
    Step 04

    Completion & Collection

    Once analysis is complete, your items are ready for collection or return shipment.

    Analysis Completion & Return Shipment

    • An invoice will be issued via email. Payment must be completed by bank transfer prior to the return of the items.
    • Clients may arrange their own courier for return shipment. If no preference is specified, the laboratory will arrange shipment via Malca-Amit (SF Express for shipments within China).
    • Shipping costs depend on the declared value of the goods. Malca-Amit price list available upon request.
    • All shipping charges, insurance costs, and related fees remain the responsibility of the depositor.

    Collection of Submitted Items

    • The deposit receipt issued at the time of submission is required for collection of gemstones or jewelry.
    • The laboratory recognizes only the depositor named on the receipt as the authorized party for collection.
    • If a third party will collect the items on the depositor's behalf, the following conditions apply:
      • β–ΈWritten authorization (power of attorney) must be provided.
      • β–ΈThe laboratory must be informed in advance.
      • β–ΈAll persons collecting items must present valid identification.
    • Items will only be released after full payment of all applicable fees has been confirmed.

    Submission Procedure β€” From the moment you bring in a gemstone to its safe return β€” a clear, considered process.

    Contact
ALGT

Independent gemological laboratory providing trusted certification from the heart of Antwerp's diamond district since 2019.

Contact

πŸ‡§πŸ‡ͺ Antwerp
Hoveniersstraat 30, 2018 Antwerp
info@algtlabs.com
+32 3 233 25 08
πŸ‡¨πŸ‡³ Shanghai
Room 1201, Ocean Building, 550 East Yan'an Road, Huangpu District, Shanghai
labshanghai@algtlabs.com
(021) 60704858
WeChat: ALGTSHANGHAI

Β© 2026 ALGT β€” Antwerp Laboratory for Gemstone Testing. All rights reserved.