Can mounted stones be tested?

Yes, IIGJ-RLC issues reports for stones mounted in metal (jewellery) as well as string.

Can rough stones be tested?

Yes, IIGJ-RLC issues reports for rough stones too.

Does IIGJ-RLC grades coloured gemstones?

IIGJ-RLC doesn’t grade coloured gemstones. Identification Reports typically mentions the characteristics of the stone, such as weight, measurements, shape, cutting style and colour, determine mineral group, species and variety, determine natural or synthetic and indicate detectable treatments.

Does IIGJ-RLC issues appraisal reports for diamonds and other gemstones?

No. IIGJ-RLC issues only identification and diamond quality grading reports.

Does IIGJ-RLC provide verbal opinion on identification and/or grading?


What does ‘Minor’, ‘Moderate’ and ‘Significant’ mean on an identification report for a treated emerald?

This suggests the amount of filler (oil/ resin) present within the fissures. This is indicative of the degree of clarity enhancement.

How do treatments affect a stone’s value?

There are several treatments applied on gemstones, out of which, many are accepted. However, confirmation from an independent laboratory like IIGJ-RLC regarding absence of any treatment adds to the value.

How is stone carat weight rounded?

As per international standards stones weight is rounded upwards if third decimal figure is nine (9). For example, a stone that weighs 1.998 ct would be rounded to 1.99 ct, but one that weighs 1.999 ct would be rounded to 2.00 ct.

Does IIGJ-RLC grades synthetic diamonds?

Synthetic diamonds undergo the same grading process as natural diamonds.

Does IIGJ-RLC grades fancy colour diamonds?

No. at this stage IIGJ-RLC only grades diamonds in colour range(scale) from D-Z.

Does IIGJ-RLC grades fancy shaped diamonds?

Since there is no internationally accepted system for evaluating cut grade for fancy shaped diamonds, IIGJ-RLC only comments on symmetry and polish.

Does IIGJ-RLC grade filled, lasered or HPHT treated diamonds?

IIGJ-RLC does not grade filled diamonds but grading reports for lasered and HPHT treated diamonds are issued with clear disclosure of treatments.

How do I get duplicate copy of a report?

You can verify the report on IIGJ-RLC website. However, if a hard copy of the report is needed, please send a letter to IIGJ-RLC stating report number and issuing date. The duplicate report is issued at a charge of Rs. 200.

Can someone other than me pick up my items and reports?

Yes. IIGJ-RLC needs you to sign a letter of authorization or a self-attested note at the back of the original acknowledgment receipt. Contact IIGJ-RLC for more details.