The Importance of IGI Certification
An IGI certificate provides an independent and globally recognized evaluation of a diamond’s authenticity and quality. It details the stone’s cut, clarity, color and carat weight with scientific precision.
This certification offers customers complete clarity and confidence. For Nishya, IGI reflects our commitment to transparency and to the verified value behind every piece.
The Importance of IGI Certification
Clarity is one of the core values of conscious luxury.
For NISHYA, every diamond must be more than beautiful — it must be verified, documented and globally recognized. This is why we work with IGI certification as a fundamental standard.
What IGI Certification Proves
The International Gemological Institute (IGI) is one of the world’s most trusted authorities for grading both natural and lab-grown diamonds.
An IGI certificate provides a scientific evaluation of:
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Cut – proportions, symmetry and light performance
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Clarity – internal and external characteristics
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Color – precise grading on the D–Z scale
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Carat Weight – measured to the hundredth of a carat
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Growth Structure & Identification – confirmation of lab-grown origin using advanced spectroscopy
Each IGI-graded diamond receives a unique identification number, ensuring full traceability and objective quality assurance.
Why IGI Matters for Lab-Grown Diamonds
Lab-grown diamonds require sophisticated testing methods because their growth environment is highly controlled.