Submission options and prices:
You may submit your stones directly at our laboratory in Central, Hong Kong. Please note the opening hoursbellow.

We accept shipments from all major global security transport providers.

Please contact us with the email form below for price list, submission form and detailed shipment instructions.

IMPORTANT: It is the clients responsibility to insure the goods adequately and to provide the correct customs information

Turnaround time:
Our regular service turnaround times are approximately 15 business days but may vary depending on availability. Additionally, we are able to offer expedited (express) service options. Please refer to our price list for more details.

Shipping and laboratory address:
GRS Lab (Hong Kong) Limited
19/F, Man Hing Commercial Building
79-83 Queen’s Road Central,
Hong Kong

T: +852 2376 3888
Or contact us with the price request email form below.

Opening hours:
Monday closed for visitors
Tue to Fri: 10am to 1pm / 2pm to 5pm
Closed: Sat, Sun, Public Holidays

We have extended opening hours during the March, June and September Hong Kong jewellery tradeshows.

Submission options and prices:
You may submit your stones directly at our laboratory in Silom, Bangkok. Please note the opening hours bellow.

Please contact us by phone for price requests.

IMPORTANT: Due to Thai customs and import regulations we do not accept any shipments to our laboratory in Bangkok. You may send the goods to our laboratories in Switzerland or Hong Kong.

Turnaround time:
Our regular service turnaround times depend on location and availability. Additionally, we offer express service options. Please contact us by phone for more details.

Laboratory address:
GRS (Thailand) Co., Ltd.
No. 228, 230 Mahesak Road
Suriyawongse, Bangrak
Bangkok 10500

T: +66 2237 5898 / T: +66 2000 4628

Opening hours:
Mon to Fri: 9am to 6pm
Closed: Sat, Sun, Public Holidays

Submission options and prices:
You may submit your stones at our laboratory by appointment only.

Please contact us with the email form below for price list requests.

IMPORTANT: Due to Sir Lankan customs and import regulations we do not accept shipments to our laboratory in Colombo. You may send the goods to our laboratories in Switzerland or Hong Kong.

Turnaround time:
Our turnaround times depend on availability.

Laboratory address:
GRS Lanka (PVT) Ltd.
471 3/1 Galle Road
Colombo 3
Sri Lanka

Opening hours:
by appointment only

Submission options and prices:
You may submit your stones by security courier or personal appointment to our laboratory in Paris. Prior to shipping or personally submitting goods to our laboratory, confirmation with us by email is required.

Please contact us with the email form below for price list, submission form and detailed shipment instructions.

IMPORTANT: It is the clients responsibility to insure the goods adequately and to provide the correct customs information.

Turnaround time:
The GRS Paris laboratory operates by a one week a month testing service. Please allow for 7 days to 3 week to test and return-ship your stones. Please contact us if you wish to get express service. Reports are ready a few days after we have return-shipped your goods and are sent separately via Fedex to you.

Laboratory and shipping address:
GRS Lab (Paris) SAS
3ème ètage, escalier C
211 Rue Saint-Honoré
Paris 75001
FRANCE

Tel: +33 1 45 75 54 05
Mob: +33 6 25 94 27 06
Or contact us with the price request email form below.

Opening hours:
Monday to Friday: 9.30 - 12:30 and 13:30 - 16:00
Closed: Sat, Sun, Public Holidays

Submission options and prices:
The GRS USA laboratory operates by a monthly shuttle service. You may submit your stones by appointment or shipment to our laboratory in New York, USA. Prior to shipping or personally submitting goods to our laboratory, confirmation with us by email is required.

Please contact us with the email form below for price list, submission form and detailed shipment instructions.

IMPORTANT: It is the clients responsibility to insure the goods adequately and to provide the correct customs information.

Turnaround time:
Our regular service turnaround times depend on location and availability. Additionally, we offer expedited (express) service options. Please refer to our price list for more details.

Shipping and laboratory address:
GRS Lab USA LLC
50 West 47th Street, Suite 1001
New York, NY 10036
United States of America

Contact us with the price request email form below.

Opening hours:
One week a month by appointment only. Please contact GRS Lab USA directly for more information or subscribe to our mailing list to be informed automatically. (needs to be with link to web mail formular) (needs to be with link for mailing list subscription)