IIGJ Lab is committed to serve the Gem & Jewellery Industry by providing independent quality assessment of Gemstones & Jewellery. IIGJ’s Ruby Identification service is well known and is availed by gemstone manufacturers, traders, and retailers.
IIGJ Lab Updates Ruby Treatment Description Policy
Effective 6th November 2025, IIGJ Lab (A Project by GJEPC India) sponsored by Ministry of Commerce and Industry, Govt. of India has updated description for ruby treatments to harmonise with major gemmological laboratories, maintaining highest levels of scientific analysis and transparency.
Harmonization of Treatment Components
Rubies are commonly heated using substances like fluxes (e.g. borax), which often is mixed with silica-based materials or high-density glass containing elements like lead (Pb), bismuth (Bi), barium (Ba), yttrium (Y), zirconium (Zr), etc. Under the current policy all these components are mentioned separately, which is now updated to reflect more unified and simplified descriptions on the ruby reports issued by the IIGJ Lab.
GJEPC Chairman’s Statement
Shri Kirit Bhansali, Chairman, GJEPC said, “GJEPC is committed to serve India’s Gem & jewellery Industry by providing world class Grading, Identification & Certification services. Jaipur is an important centre for Coloured Gemstones and is growing rapidly as jewellery manufacturing centre. We believe the revised description of treatment in Ruby Reports will become important sales tool for the coloured gemstone industry to gain confidence of the Customers. We continue to invest in building skills and Lab infrastructure to meet the growing needs. “
Updated Ruby Treatment Comments (Table)
Following are the updated description / treatment comments mentioned on the ruby reports issued by IIGJ Lab:
| Treatment Type and Features | Description |
| – Indications of heating with residues and silica-based substance in fissures or, – high-density glass (Pb, Ba, Bi, Y, Zr) in fissures where no flash effect is observed | – Var.: Natural Ruby – Spe.: Natural Corundum – Comments: Indications of heating and clarity enhancement with residue in fractures and cavities. Extent: (TE1-TE5) / (F1-F3) – as applicable – Remarks (if lead is detected): Lead glass was detected. |
| – Presence of High-density glass in fissures / cavities with flash effect, numerous gas bubbles, indistinct single crystal | Var.: Glass-Filled Ruby Spe.: Natural Corundum – Comments: Indications of clarity enhancement by lead/bismuth/barium glass in fractures and cavities. No quantification in this case |
| – High density coloured glass in fissures with flash effect, numerous gas bubbles, colour concentrations | Var.: Glass-Filled Ruby / Sapphire Spe.: Natural Corundum – Comments: Indications of clarity enhancement with coloured glass in fractures and cavities – No quantification in this case |
About IIGJ Lab
IIGJ Lab is a project of the Gem & Jewellery Export Promotion Council – sponsored by The Ministry of Commerce & Industry, Government of India. Mission of the Lab is to help trade and consumers to make informed choice.
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