Mumbai: Gemological Science International (GSI) has officially introduced its specialised coloured gemstone grading reports in Mumbai and Jaipur, allowing Indian gemstone dealers to access globally recognised colour trade designations locally.
For the first time, local traders can obtain internationally recognised colour classifications, including “Pigeon Blood” for rubies, along with “Royal Blue” and “Padparadscha” for sapphires, without having to send their gemstones overseas for evaluation.
For years, Indian gemstone cutters and merchants had to ship premium stones to international laboratories to secure these prestigious trade designations. This process involved additional logistics costs, transit risks and extended turnaround times. By bringing these assessments to India, GSI aims to address a long-standing requirement within the domestic gemstone trade and provide global-level certification closer to key market centres.
These premium colour designations are governed by strict standards and are awarded only to completely untreated gemstones. Stones that have undergone heat treatment, chemical enhancement or any other form of alteration are not eligible for these specific colour classifications, regardless of their visual appeal.
To ensure consistency and accuracy, GSI follows scientific grading methodologies rather than relying only on visual assessment. Gemologists evaluate gemstones under controlled laboratory lighting conditions and use advanced colour measurement tools and light analysis techniques to assess factors such as hue, tone and saturation.
Each GSI laboratory follows standardised reference systems, calibrated equipment and consistent grading protocols. This ensures that a gemstone evaluated in Jaipur or Mumbai follows the same assessment standards as one examined at GSI facilities in international locations.
The introduction of these reports is particularly significant for historic gemstone centres such as Jaipur, which has been a global hub for the cutting and trading of high-value rubies, sapphires and other coloured gemstones for generations.
Speaking about the development, Meenu Brijesh Vyas, Global Head Gemologist at GSI, highlighted that Indian artisans have contributed significantly to the global gemstone industry, but local traders often had to seek international recognition for premium colour classifications.
With these grading capabilities now available within India, gemstone dealers, manufacturers and retailers can access globally recognised evaluation standards while strengthening transparency, confidence and value within the domestic coloured gemstone market.