Why You Should Choose E Color Lab Diamonds with IGI Certificate

When purchasing a lab-grown diamond, buyers are often faced with various grading standards and price differences that can impact the final decision. One of the most frequently asked questions is: "Is it worth getting a D color diamond over an E?" In this blog, we’ll explore why E color lab diamonds with IGI certificates represent the best value, especially for diamonds under 2 carats.

1. Understanding IGI Grading Standards

The International Gemological Institute (IGI) is one of the most recognized labs for certifying lab-grown diamonds. However, its color grading standards are slightly more lenient than those of the Gemological Institute of America (GIA). This means an E color graded by IGI may appear very similar to an F or even a G by GIA standards.

While GIA is still considered the industry gold standard for natural diamonds, IGI has gained trust in the lab-grown market due to its faster turnaround and broader adoption by manufacturers. However, this leniency creates an opportunity: choosing an E color graded by IGI gives you a near-D look at a significantly lower price.

2. Minimal Visual Difference Between D and E Color

To the naked eye, there is virtually no noticeable difference between a D and E color diamond—especially when the stone is mounted in a ring. According to expert jewelers and gemologists, only under controlled lighting and side-by-side comparison can most people detect the difference.

3. Price Efficiency Under 2 Carats

The price difference between D and E color lab diamonds is typically between 5% to 10%—which may not sound like much, but when looking at diamonds under 2 carats, this could mean hundreds of dollars saved without compromising on quality or visual appeal.

Let’s say a 1.5ct D color lab-grown diamond costs $2,800 USD. The same size E color might cost only $2,400 USD with no perceptible drop in beauty. That $400 savings can be reallocated to a better cut grade, setting, or even matching earrings.

4. Over 2 Carats: Choose E, Avoid F or Below

As diamond size increases, so does the visibility of color. For diamonds over 2 carats, buyers are often tempted to save by choosing an F or even G color. However, in the lab-grown market—particularly under IGI’s grading system—F color and below often show visible yellow tints.

Worse, the resale value of lab diamonds graded F or below plummets. These lower-grade stones are much harder to sell or upgrade due to lower demand and market saturation.

By contrast, E color diamonds remain in high demand and offer a superior resale profile, especially in Asian markets where white brilliance is highly prized.

5. Investment Considerations: Resale & Perceived Value

While lab-grown diamonds generally depreciate faster than natural diamonds, color grade plays a significant role in resale performance. D and E color stones are still perceived as premium grades and hold more buyer confidence.

For example, on platforms like I Do Now I Don’t and secondhand luxury markets in Asia, E color IGI-certified lab diamonds are often easier to re-sell or upgrade than F/G/H grades.

6. Final Thoughts

In summary, here’s why buying an E color lab diamond with an IGI certificate makes practical and financial sense:

• IGI’s grading makes E appear close to D visually
• Less price premium vs. D, especially under 2ct
• Greater resale value compared to F or G color
• Better brilliance and perceived whiteness in larger stones
• Perfect balance of aesthetics and value

If you’re shopping for a lab-grown diamond, always request an IGI certificate and consider staying within the D-E range to ensure long-term value. Avoid going below F unless price is the top priority and resale is not a concern.

To explore premium E color diamonds with IGI certification, visit our online store at MadisonDia.com.