CDG CDG Laboratory Grading Reports & Documentation 2

Question 1

A diamond grader suspects a GIA report may be counterfeit. What is the FIRST step to verify authenticity?

Accepted Answer

Use GIA's online Report Check tool with the report number

Answer

Call the diamond dealer who provided it

Answer

Compare font styles with other known GIA reports

Answer

Weigh the diamond to verify the stated carat weight

Question 2

What is the primary purpose of a laser inscription on a diamond's girdle?

Accepted Answer

To link the physical diamond to its grading report

Answer

To indicate the diamond's country of origin

Answer

To record the grader's identification number

Answer

To indicate whether the diamond is natural or laboratory-grown

Question 3

What should a grader do if a diamond's measured weight does not match the weight stated on the accompanying report?

Accepted Answer

Treat it as a potential fraud situation and follow the laboratory's protocol for mismatched stones

Answer

Update the report to reflect the newly measured weight

Answer

Accept the report's stated weight as authoritative

Answer

Return the stone to the client without comment

Question 4

Which security feature on modern GIA reports specifically prevents accurate reproduction by photocopying or color printing?

Accepted Answer

Micro-printing and color-shifting ink

Answer

Standard black-and-white printing only

Answer

Raised embossed text

Answer

Diamond-shaped watermarks only

Question 5

When a client presents a diamond claimed to be 'D Flawless' with a GIA report, what verification step is most critical?

Accepted Answer

Confirm the laser inscription matches the report number under magnification

Answer

Reweigh the diamond to confirm carat weight

Answer

Test fluorescence to verify it matches the report

Answer

Examine girdle thickness to confirm the reported proportion grade

Question 6

What does it mean when a GIA report status shows as 'canceled'?

Accepted Answer

The laboratory has invalidated it due to tampering, alteration, or discovery of undisclosed treatment

Answer

The diamond has been sold and the report transferred to the new owner

Answer

The grader who issued it has retired from the laboratory

Answer

The report has expired after a standard 5-year validity period