When it comes to buying diamonds, clarity is one of the key factors that influences both their beauty and value. The International Gemological Institute (IGI) provides a standardized grading system to help consumers understand a diamond's clarity and quality. But how exactly does IGI grading work? Let’s break it down.
What is IGI?
IGI, or the International Gemological Institute, is one of the world’s leading gem certification organizations. They analyze and grade diamonds based on various quality parameters, including clarity, color, cut, and carat weight.
How Does IGI Grade Diamonds?
IGI’s clarity grading assesses the presence of internal and external flaws, known as inclusions and blemishes. Their grading scale ranges from Flawless (FL) to Included (I3), with specific criteria:
Flawless (FL): No inclusions or blemishes visible under 10x magnification.
Internally Flawless (IF): No inclusions visible under 10x magnification; only minor blemishes on the surface.
Very Very Slightly Included (VVS1 and VVS2): Inclusions are extremely difficult to see under 10x magnification.
Very Slightly Included (VS1 and VS2): Inclusions are minor and range from difficult to somewhat easy to see under 10x magnification.
Slightly Included (SI1 and SI2): Inclusions are noticeable under 10x magnification and sometimes visible to the naked eye.
Included (I1, I2, I3): Inclusions are obvious under 10x magnification and may be visible to the naked eye, potentially affecting transparency and brilliance.
What Does the Grading Process Involve?
1. Inspection: Certified gemologists examine the diamond under various magnifications and lighting conditions.
2. Assessment: They identify and evaluate all visible flaws or inclusions.
3. Comparison: The flaws are compared to IGI’s established standards to assign a clarity grade.
4. Certification: A detailed report is generated, describing the diamond’s clarity grade along with other quality parameters.
Why Is IGI Grading Important?
Transparency: Provides buyers with an objective assessment of diamond quality.
Value Assurance: Helps determine fair market value based on clarity and other factors.
Confidence: Ensures you’re making an informed purchase backed by reputable certification.
In Summary
IGI grading is a meticulous process that evaluates a diamond’s internal and external characteristics. Understanding these grades helps you choose a diamond that matches your preferences and budget, giving you confidence in your purchase.
If you want more details about IGI grading or tips for selecting the perfect diamond, feel free to reach out!
Happy diamond shopping!