6.31ct Cushion Fancy Y.G.Green Si3 Certified AIG Natural Diamond Natural NR

6.31ct Cushion Fancy Y.G.Green Si3 Certified AIG Natural Diamond Natural NR

6.31ct Cushion Fancy Y.G.Green Si3 Certified AIG Natural Diamond Natural NR. Let’s break down this 6.31ct Cushion Fancy Yellowish Green Si3 AIG Certified Natural Diamond, Natural NR:

1. Carat Weight: 6.31ct This is a very substantial size, especially for a fancy colored diamond. A diamond over 6 carats is large and makes a significant statement.

2. Shape: Cushion The cushion cut is a popular choice for fancy colored diamonds because its rounded corners and larger facets can often enhance and distribute the color well, maximizing its visual appeal. It’s a blend of a square or rectangular cut with rounded corners, known for its soft, romantic look and strong sparkle.

3. Color: Fancy Yellowish Green This is the most unique and valuable aspect of the diamond.

• Fancy Color Diamond: “Fancy” indicates that the diamond possesses a noticeable body color beyond the normal D-Z color range. Fancy colored diamonds are graded differently than colorless diamonds, with their value primarily driven by the intensity and purity of their hue.
• Yellowish Green: This means the primary color is green, with a secondary modifying hue of yellow. Green diamonds are among the rarest of all fancy colors, naturally formed by exposure to radiation over millions of years. The “yellowish” modifier generally makes green diamonds slightly less rare and often less expensive than pure green or greenish-blue diamonds, but they are still highly sought after. The exact intensity (e.g., Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Deep, Fancy Dark) would be crucial for its value, but “Fancy Yellowish Green” generally indicates a good saturation of color.

4. Clarity: Si3 This is a critical point for consideration.

• SI (Slightly Included): This means inclusions are noticeable under 10x magnification.
• SI3: It’s important to know that SI3 is not an official clarity grade used by the most reputable laboratories like GIA or AGS. GIA’s clarity scale goes from FL (Flawless) to I3 (Included 3). Within the “Slightly Included” range, GIA has SI1 and SI2. The SI3 grade is often used by some labs (like EGL or sometimes AIG) to describe diamonds that fall between an SI2 and an I1, effectively “upgrading” what might be considered an I1 (inclusions visible to the naked eye) into a more marketable “SI” category.
• Eye-Cleanliness: An SI3 diamond is highly likely to have inclusions that are visible to the naked eye. These inclusions could impact the diamond’s brilliance, durability, and overall appearance. For a diamond of 6.31 carats, any inclusions would be more apparent due to the larger size.

5. Certification: AIG (Asian Institute of Gemological Sciences / American International GemLab)

• Reputation: This is the most significant concern. While AIG (American International GemLab, often confused with Asian Institute of Gemological Sciences) does issue diamond certificates, they do not have the same stringent and consistent grading standards as GIA or AGS. Many in the diamond industry consider AIG’s grading to be more lenient than GIA’s, especially concerning clarity and color. This means an AIG-graded SI3 might be an I1 or even an I2 if graded by GIA. Similarly, the “Fancy Yellowish Green” intensity might be graded differently by GIA.
• Buyer Beware: Relying solely on an AIG report for a high-value stone like this is risky. The potential for grade inflation means you could be paying a price based on an inflated grade.

6. “Natural Diamond Natural NR”

• Natural Diamond: This confirms it’s a genuine diamond formed by nature, not a lab-grown (synthetic) diamond. This is important as natural diamonds generally hold much higher value.
• “Natural NR”: The “NR” likely stands for “No Resonance” or “No Indication of Treatment” in older AIG reports or sometimes “Natural and untreated.” However, it’s crucial to confirm this with the specific AIG report. If it means “No Resonance,” it’s about the diamond’s response to a specific test, not directly about treatment. If it means “Natural and Untreated,” it’s a positive, as many fancy colored diamonds (especially greens) can undergo treatments like irradiation and annealing to enhance their color. Given the context of “Natural Diamond,” if “NR” means “No Treatment,” it’s a very good sign for a green diamond. However, the AIG report must explicitly state “Natural Color Origin” and “No Treatment” to be fully confident.

Overall Assessment and Recommendations:

This 6.31ct Cushion Fancy Yellowish Green diamond has the potential to be a stunning and rare piece, especially given its size and unique color. However, the AIG certification and the SI3 clarity grade raise significant flags.

Before considering a purchase:

1. Independent Appraisal/Re-certification: This is the most crucial step. If you are serious about this diamond, insist on having it re-graded by a reputable lab like GIA or, at the very least, IGI (International Gemological Institute, which is generally more consistent than AIG but still often considered slightly more lenient than GIA). This will give you an objective and reliable assessment of its true clarity and color intensity.
2. View the Diamond: You must see this diamond in person or through high-resolution 360-degree videos to assess its eye-cleanliness and how the inclusions (if visible) affect its beauty and durability. For an SI3, you’d want to ensure the inclusions aren’t distracting, large, or negatively impacting the diamond’s structural integrity.
3. Understand Fancy Color Grading: Familiarize yourself with how fancy color diamonds are graded (hue, tone, saturation) and how “Fancy Yellowish Green” positions itself on the spectrum.
4. Confirm “NR”: Get explicit confirmation from the seller and the AIG report what “NR” exactly means and if it implies “Natural Color Origin” and “No Treatment.” This is vital for natural fancy green diamonds.

Without a GIA or similar highly reputable report, it’s impossible to accurately determine the true value and quality of this diamond. The price should reflect the actual grades it would receive from a top-tier lab, not potentially inflated AIG grades. Proceed with extreme caution and professional independent verification.

6.31ct Cushion Fancy Diamond