Labgrown Diamond Screening Process

Labgrown diamonds are of two types CVD ( Chemical Vapour Deposition ) & HPHT ( High pressure high temperature ), All screened diamonds identified as Labgrown are sealed in tamper-proof packets. If any diamonds are found to be other than Labgrown diamonds (e.g., synthetic stones), they are separated and placed in a red color labeled packet alongside the Labgrown diamond packet.

If the customer wants a separation between CVD & HPHT, we do so by ticking on a checkbox labeled CVD or HPHT. This ensures proper screening and segregation.

In certain cases, a fancy colour diamond may be placed in a "Refer for Further Testing (RFT)" packet. These require additional analysis using a separate machine to determine possible its growing method whether it is CVD or HPHT.

Screening Steps:

1. Weighment (Initial):
   Customers are requested to weigh their packet in the presence of the gemologist before submission.
2. Cleaning:
   All diamonds are cleaned prior to the screening process.
3. Screening:
   Diamonds are screened using advanced technology machines.
4. Segregation: If any natural or synthetic stones (e.g., Moissanite or Cubic Zirconia/A.D.) are detected, they are separated and placed in a clearly labeled packet.
5. Refer to further Test (R.F.T.) Fancy colour diamonds that cannot be detected using screening machines and require further analysis are placed in the RFT packet for advanced testing.
6. Weighment (Final):
   After screening and segregation, diamonds are re-weighed by the customer to confirm the receipt and accuracy of the process.
7. Non-Tearable Packaging: Labgrown diamonds are returned in the red coloured labelled packet. Synthetic stones are returned in a separate packet labeled in red color. All packets are sealed together in a single non-tearable recycled plastic bag to ensure accuracy, security and transparency.

Naturalmark Lab issues report for screening on LabgrownMark, if required by a customer.