An Update on GIA Locations in Response to Coronavirus (COVID-19)

With the number of coronavirus cases increasing globally, GIA is taking the necessary precautions to ensure everyone’s health and safety, including reducing our service hours and closing some locations. The situation is changing rapidly so we will update this page as our locations’ hours change.

Find out more about campus closures in our letter to students and updates for students enrolled in eLearning courses.

View FAQs for laboratory clients.

Current Service Hours


The laboratory is open Monday to Friday from 9.00 am to 4.00 pm. by appointment only for submission and return of polished diamonds. Please email if you have any questions.

If you wish to arrange to have Malca-Amit pick up your "ready for collection” stones from GIA, please email your instructions to or There is no minimum requirement for your collection, but there is a maximum stone value of US $500,000.


School closed

Monday - Friday, 10.00 am - 4.00 pm


The GIA Carlsbad laboratory is open with limited staff and capacity. At this time, the laboratory will only accept goods via courier and will not offer same-day services. Please email with any questions.

School closed
CARES Act - Higher Education Emergency Relief Fund

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



The laboratory is open with limited capacity to comply with social distancing and abide by local government mandates. Please email with any questions.


The laboratory is temporarily closed. 

Hong Kong

School open

Laboratory in Kowloon Bay
Monday - Friday, 9.00 am - 5.00 pm
All walk-in intake and return services will be carried out via the GIA Service Centre in Central.

Service Centre in Central
Monday - Friday, 9.00 am - 4.00 pm


School closed


The laboratory is open for intake of polished stones with limited staff and modified hours, and clients may submit stones in person with an appointment. To schedule an appointment and receive instructions for stone return, please email

School closed

New Delhi

School closed

New York

School, laboratory and research centre closed


Sunday - Thursday, 9.00 am - 5.00 pm


The laboratory is open with limited staff and modified hours, and is accepting submissions of polished stones up to 0.70 ct. Until 12 June, stones 0.70 ct and above (in separate parcels) can be submitted for grading at other GIA locations. At this time, the laboratory will only accept and return stones using a courier service. For questions, please email

School closed


School open


The laboratory counter is open with limited capacity. We are also accepting items sent by courier services.

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