Beyond the 4C's

Advanced Grading: We Measure What Others Miss

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.
Visual Performance
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