IGI-Certified Diamonds: What the Certificate Means
What Is an IGI Certificate?
An IGI (International Gemological Institute) certificate is a comprehensive grading report issued for each individual diamond. It documents the stone's precise characteristics: Cut, Colour, Clarity, and Carat weight, along with measurements, finish grades, and fluorescence.
Every Nivara diamond is IGI-certified. This means an independent expert, not the seller, has examined and graded your stone before it reaches you.
What the Certificate Contains
| Field | What It Tells You |
|---|---|
| Report Number | Unique identifier: laser-inscribed on the girdle of the diamond |
| Shape & Cut Style | e.g., Round Brilliant, Princess, Oval |
| Measurements | Exact dimensions in millimetres |
| Carat Weight | Weight to the nearest 0.01ct |
| Colour Grade | D (colourless) through Z on the international scale |
| Clarity Grade | FL (Flawless) through I3. Based on inclusions under 10x magnification |
| Cut Grade | Excellent / Very Good / Good. Applies to round brilliants |
| Polish & Symmetry | How precisely the facets are finished and aligned |
| Fluorescence | How the stone reacts under UV light |
Why IGI for Lab-Grown Diamonds?
IGI is the world's leading authority for lab-grown diamond grading: the same rigorous standards applied to natural diamonds, adapted specifically for laboratory-grown stones. Other labs may grade lab-grown diamonds, but IGI is the benchmark the industry trusts.
How to Verify Your Certificate
Every IGI certificate can be verified at igi.org/verify using the report number. The laser inscription on your diamond's girdle matches the report number: confirmable under a loupe at any Nivara showroom.
Reading Your Certificate at Nivara
When you book a private consultation at Nivara, we walk you through your stone's certificate in detail, explaining what each grade means for the diamond's visual appearance and how it compares to alternatives in our collection.
Book a private viewing at our Hyderabad, Bangalore, or Indore showrooms.
