GIA Locations - hours and services



Many GIA locations have returned to normal hours and services. We will update this page as changes occur. At each of its locations, GIA is taking the necessary precautions to ensure everyone’s health and safety.

Find out more about GIA campus reopening updates.

View FAQs for laboratory clients.

Current Service Hours

Antwerp

Laboratory 
The laboratory is open Monday - Thursday, 9.00 am - 5.00 pmand Friday, 9.00 am - 4.00 pm by appointment only for submission and return of polished diamonds. The following options are also available for stone pick up and drop off.

  • Ship your stones to GIA. View the instructions for shipping to the Antwerp laboratory.
  • Schedule free collection from your office by emailing antwerplab@gia.edu or antwerppickup@gia.edu. There is a minimum requirement of five stones and a maximum stone value of US $500,000.
  • Drop off your stones at Malca-Amit for free. Malca-Amit will ensure that your stones are delivered to GIA. There is no minimum requirement for your drop-off, but there is a maximum stone value of US $500,000.
  • If you wish to arrange to have Malca-Amit collect your "ready for collection” stones from GIA, please email your instructions to antwerplab@gia.edu or antwerppickup@gia.edu. There is no minimum requirement for your collection/pick up, but there is a maximum stone value of US $500,000.

View more details on our Antwerp laboratory, or email antwerplab@gia.edu if you have any questions.

Bangkok

Laboratory
Monday - Friday, 10.00 am - 5.00 pm

School
School open – find out more

Carlsbad

Laboratory
The laboratory is open for submissions via courier or walk-in. The walk-in service is available by appointment only Monday - Friday, 8.30 am to 3.00 pm Make an appointment. 

Please email carlsbadlab@gia.edu if you have any questions.

School
School open – find out more

Instruments
The customer service department is open Monday - Friday, 7.30 am to 4.30 pm. Please email giastore@gia.edu with any questions or after-hours requests.

Museum
Closed

Gaborone

Laboratory

The laboratory is open for submissions via courier or walk-in. The walk-in service is available between 8.00 am. and 4.30 pm. by appointment only. Please make sure you are following all local health and safety guidelines. If you have any questions or to make an appointment, please email gaboronelab@gia.edu.

JOHANNESBURG

Laboratory
The laboratory is open for submissions via courier or walk-in. The walk-in service is available between 7.30 am. and 4.00 pm, no appointment required. Please make sure you are following all local health and safety guidelines. If you have any questions, please email johannesburglab@gia.edu.

Hong Kong

Laboratory in Kowloon Bay
Monday - Friday, 9.00 amto 6.00 pm
All walk-in intake and return services will be through the GIA Service Center in Central.
Fast-track service is currently not available for Coloured Stone submissions.

Service Centre in Central
Monday - Friday, 9.00 amto 4.00 pm
Fast-track service is currently not available for Coloured Stone submissions.

School
School open – find out more

London

School open – find out more

Mumbai

Laboratory
The laboratory is open for intake of polished stones with limited staff Monday - Friday, 7.30 am. to 4.30 pm, and clients may submit stones in person with an appointment. To schedule an appointment and receive instructions for stone return, please email mumbailab@gia.edu.

School
School open – find out more

New Delhi

School
School open – find out more

New York

Laboratory
The laboratory is open for walk-ins Monday - Thursday, 8.30 a.m. - 6.00 pm and Friday, 8.30 am - 5.00 pm To ship your items to New York, please click here for appropriate shipping addresses.

Please email newyorklab@gia.edu if you would like to have your items picked up and dropped off for free via Malca-Amit (limitations apply), or if you have any questions

School
School open – find out more

RAMAT GAN

Laboratory
Sunday - Thursday, 9.00 am - 6.00 pm Please email ramatganlab@gia.edu if you have any questions.

Surat

Laboratory
The laboratory is open Monday - Friday, 9.00 am. - 4.30 pm and is accepting submissions of polished stones up to 0.70 ct. The laboratory is accepting and returning stones using a courier service and clients may also submit items with a prior appointment.

Everyone visiting the GIA offices, including clients, must wear face masks and must have been fully vaccinated.

Please email suratlab@gia.edu if you have any questions.

School
School open

Taipei

School
School open – learn more

Tokyo

Laboratory
The laboratory counter is open Monday - Friday, 10.00 am - 5.00 pm with a break from 12.00 pm - 1.00 pm. We are also accepting items by courier.

Contact Us

If you have questions or concerns, please contact a GIA location or send us a message.