Understanding Diamond Certifications: GIA vs IGI vs AGS
Learn about the different diamond certification laboratories and what their grades mean for your purchase.
When purchasing a diamond, certification from a reputable laboratory is essential. Here's what you need to know about the major certification bodies.
GIA (Gemological Institute of America)
GIA is considered the gold standard in diamond grading. They invented the 4Cs and their grading is known for being strict and consistent.
IGI (International Gemological Institute)
IGI is particularly well-known for grading lab-grown diamonds. They have laboratories worldwide and are gaining recognition for their consistent standards.
AGS (American Gem Society)
AGS uses a unique 0-10 grading scale and is particularly known for their cut grading, which many consider the most scientific in the industry.
Why Certification Matters
A certification provides an unbiased assessment of your diamond's qualities. It protects your investment and makes it easier to compare diamonds from different sources.
