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Read the reported characteristics, check the report reference, and ask questions about the stone itself. Independent reports ensure objective quality evaluation.
An independent gemological report (such as those issued by IGI) documents the physical and optical characteristics of an unmounted stone examined under standardized laboratory conditions.
It details exact carat mass, millimeter dimensions, cutting style, color grading against master stones, clarity under 10x magnification, polish, symmetry, and laser inscription details.
Accredited gemological laboratories use advanced spectroscopic instrumentation to identify growth origin definitively.
The report header clearly discloses whether the stone is a natural geological diamond or a laboratory-grown crystal. Both receive thorough grading across the same scientific scales.
Familiarize yourself with the key sections of a grading document before reviewing individual diamonds.
A grading report establishes physical and optical characteristics; it does not set a commercial selling price, insurance replacement valuation, or future resale value. Diamond market pricing fluctuates based on global supply, consumer demand, cutting precision, and origin.
Find the laboratory alphanumeric report number on your document or on our listing (e.g. IGI reference numbers).
Access the laboratory's verified official portal (such as igi.org/verify-your-report) directly without third-party proxies.
Cross-check recorded measurements, carat weight, color, clarity, and symmetry to ensure exact alignment.
Confirm that the microscopic laser engraving on the diamond's girdle matches the certificate reference.
Browse natural and laboratory-grown loose diamonds accompanied by official grading reports.