Traditional grading evaluates only color, clarity, cut, and carat. VeraLume goes further, analyzing subtle qualities that significantly affect beauty but are often overlooked.
Color Tone
Subtle undertones are carefully identified, even in colorless grades, to ensure accurate evaluation.
Color Tone Scale
Pure: Crisp white, no undertone
Brown: Warm undertone, may soften brilliance
Grey: Cool undertone, can mute sparkle
Blue: Rare undertone, sometimes perceived as icy
Pure
Crisp white, no undertone
Brown TINT
Warm undertone, may soften brilliance
Grey TINT
Cool undertone, can mute sparkle
Blue TINT
Rare undertone, sometimes perceived as icy
Growth Lines
Formed during the lab-creation process, growth lines can reduce transparency and sparkle. Veralume evaluates and clearly discloses their presence.
Growth Line Scale
None: No visible lines under 10x magnification
Slight: Faint, minor effect face-up
Moderate: Noticeable, may reduce transparency/ sparkle
Distinct: Prominent, reduces brilliance and effects beauty
None
No visible lines under 10x magnification
Slight
Faint, minor effect face-up
Moderate
Noticeable, may reduce transparency/ sparkle
Distinct
Prominent, reduces brilliance and effects beauty
Visual Performance in Action
Visual Performance
Each VeraLume™ diamond is evaluated for Color Tone, Growth Lines, and Visual Performance, our proprietary measure of brilliance, fire, and face-up beauty.
A closer look at advanced grading factors like Color Tone and Growth Lines that reveal what traditional reports may miss.
Why aren’t the 4Cs enough to fully evaluate a lab-grown diamond?
The 4Cs measure core characteristics, but they may not capture subtle undertones, internal growth features, or certain aspects of light performance that influence how a diamond looks face-up.
What does “Beyond the 4Cs” mean in diamond grading?
It refers to evaluating additional qualities that affect a diamond’s beauty, such as color undertones, structural transparency, and light performance, which are not always fully documented in traditional grading reports.
How does VeraLume evaluate Color Tone?
VeraLume identifies subtle undertones, such as brown, gray, or blue, even within colorless grades. These undertones can affect a diamond’s brilliance as well as its overall warmth or coolness.
Why can a diamond with a high color grade still appear slightly warm or muted?
Standard color grading measures lightness, but undertones may still be present. Advanced evaluation helps distinguish between a crisp white appearance and subtle tint influences.
What are Growth Lines in lab-grown diamonds?
Growth Lines are internal crystal features formed during the laboratory growth process. Depending on their visibility, they may influence transparency and sparkle.
How does VeraLume disclose Growth Lines?
VeraLume evaluates Growth Lines under magnification and documents their presence on a defined scale, helping buyers understand their potential visual impact.
Do Growth Lines always affect how a diamond looks?
Not always. Faint growth features may have little to no visible effect, while more noticeable lines can influence transparency and brilliance.
Why is structural clarity important in diamond beauty?
Structural clarity affects how evenly light travels through the diamond and supports stronger brightness and a cleaner face-up appearance.
How does advanced grading improve diamond comparison?
By documenting undertones and structural features alongside traditional grades, advanced grading makes it easier to understand why two diamonds may look different even when they have similar specifications.
What is the purpose of VeraLume’s advanced grading approach?
The purpose is transparency. VeraLume measures and discloses qualities that significantly influence beauty but are often overlooked, providing a more complete evaluation of lab-grown diamonds.
