Turnaround Time
Below are the current estimated turnaround times for diamonds and colored gemstones submitted to GIA Laboratories. Turnaround time is calculated from the date GIA receives the item to the date results are made available to the client. Secondary services and transit times are not factored into the estimate. Turnaround times are updated weekly.
| GIA Laboratory Global Turnaround Times |
| For the week of March 8, 2010 |
| Lab Location | Diamonds over 4 Carats | Diamond Dossier® | Diamond Grading | Colored Diamonds | Colored Stones/Pearls |
| Carlsbad | 2-3 days | 8-10 days | 8-10 days | 9-11 days | 5-7 days |
| New York | 2-3 days | 9-11 days | 10-12 days | 6-8 days | 5-7 days |
| Bangkok | ** | 1-2 days | 1-2 days | ** | 5-7 days |
| Gaborone | ** | 1-2 days | 1-2 days | ** | ** |
| Johannesburg | ** | 3-4 days | 3-4 days | ** | ** |
| Mumbai | ** | 8-10 days | 8-10 days | ** | ** |
** Service not performed at this location. Stones received here will be shipped to another GIA location for grading or identification.
Turnaround time for the Laboratory Service Center is calculated from the date GIA receives the item to the date results are made available to the client. This includes shipping time to the GIA Laboratory location but does not include shipping time back to the Service Center.
| Service Center Location | Diamonds over 4 Carats | Diamond Dossier® | Diamond Grading | Colored Diamonds | Colored Stones/Pearls |
| Hong Kong | 4-5 days | 6-8 days | 6-8 days | 10-12 days | 7-9 days |
Lab Services
- Find a Lab or Drop Off Location
- Check Turnaround Time
- Verify A Report
- My Laboratory Login
- Contact Us
- Order Retail Support Tools
- Download the 4Cs Brochure
- Estimate a Cut Grade
Conducting Gem Research
Since 1931, gemological research has been one of GIA’s core activities.
Gems & Gemology
Gems & Gemology publishes the latest research on diamonds and colored stones.