Crafting fire and sparkle

New territory

Dispersion (seen as fire) and scintillation (seen as sparkle) are critical components of diamond performance, but diamond grading laboratories don't yet measure them.

Why not?

  1. Fire and sparkle are hard to quantify: The world has an infinite panorama of illumination scenarios and each of them creates different output potential.
  2. Human physiology varies: Average pupil diameter is different, person to person, and even changes with age, so some people perceive dispersed spectral fans as color (fire) better than others.
  3. Economics. Today's cut grades are notoriously factory-friendly. Stricter requirements would meet heavy resistance from within the diamond trade.

Since they are not graded, there's no motivation for producers to develop the knowledge and spend the extra time and (most notably) expense of carat weight needed to fine-tune a diamond for optimum fire and sparkle. Most diamonds are planned and cut to minimum brightness level needed to "make the grade."  You can read more information about current cut grading standards here.


After reading the below you will know more about diamond optics than many professional jewelers. We're not kidding. An investment of 10 minutes here will explain why you will regularly see quality differences between diamonds with the same laboratory cut grade. It may be especially interesting if you are an engineer, architect, mathematician or science professional.

Furthermore, you will come to understand why we constantly say that many people, even jewelry professionals, have never experienced the fire, sparkle and life of diamonds that have been fine-tuned like those Crafted by Infinity.

Prerequisite 1

Better Brightness

Better Brightness sets the stage for more fire and sparkle. Crafted by Infinity does this by concentrating on all 57 facets' critical angles (not group-averages as the labs measure).

Tuning each facet-pair around the clock of the diamond returns light rays back to your eyes on shorter paths with more intensity.

As a fundamental benefit every Crafted by Infinity displays robust edge to edge brightness, causing them to look bigger than others of the same weight and face-up whiter than other diamonds of the same lab color grade.   

Prerequisite 2

Dispersion versus Fire

Diamond breaks light into spectral fans (dispersion). In most cases, if one of these spectral fans hits our eye and is wider than our pupil diameter we will see it as a color (fire). If the spectral fan is smaller than our pupil diameter the light recombines and we see a white flash. If it's too small we see nothing.


Seeing fire in diamonds

A diamond's external facets create the patterned appearance of internal reflections. Researchers refer to these as virtual facets or compound mirrors. How broken or unbroken these internal reflections are determines how much of a diamond's output you might see as fire, especially away from bright spotlighting.

Images used with permission

Broken reflections create many small compound mirrors and smaller, weaker spectral fans, so your pupil will see mostly white flashes or nothing. Unbroken reflections promote larger compound mirrors and wider, bolder spectral fans, so your pupil will see more color (fire). Moreover, a single, wide fan passing over your pupil can cause you to see a full suite of shifting colors.


Crafting More Fire

More fire is created by fine-tuning all of the diamond's internal mirrors in three-dimensions (not measured by the labs). This causes larger, unbroken internal reflections, boosting wider spectral fans of dispersion which are seen by your eyes as bigger, bolder bursts of fire. Infinity's fundamental better brightness benefit adds intensity, so you see more fire in more places, even in normal and low social lighting where other diamonds go dark.

See the Science

Crafted by Infinity wearers regularly share stories of surprise and delight. These airplane photos capture Infinity's wide spectral fan output, seen by your eyes as bigger, bolder bursts of fire. These spectral fans are produced by a Crafted by Infinity weighing just 0.77 carats.

Seeing sparkle in diamonds

Scintillation occurs when the diamond, the light source or the viewer are in motion. Generally speaking, scintillation is the shifting appearance of white and colored flashes across the crown of the diamond. However, the intensity of the scintillation is also a function of contrast. Anyone who has been in a dark room and had a bright light suddenly turned on knows that it's a far more dynamic change than being in a dim room and having a moderate light turned on. It's also safe to say that an even pattern of sharp light and dark (like a checker board) is more striking than a pattern that's mixed or muddy.

Crafting More Sparkle

More sparkle is achieved by boosting all scintillation components including contrast. The white and colored flashes you see have already been optimized. Crafted by Infinity boosts contrast by focusing on crisp, precision-cut facet lines and a perfectly even pattern. Along with edge to edge brightness and bigger, bolder bursts of fire, the crisp, precise faceting creates more intense "on-off" scintillation and dynamic contrast your eyes see as superior sparkle.

Crafting More Life!

From the day Infinity was founded Paul Slegers has focused on optimizing these visual results which are yet unmeasured and ungraded by diamond laboratories.

Better brightness, bigger bolder bursts of fire, superior sparkle and greater life through all lighting conditions. Every Crafted by Infinity Diamond is scientifically planned and precision-cut with these goals in mind.

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Design: Mainostoimisto Rinne | Development: Bitworkz