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The C's: Color
Most diamonds contain some hint of color. This is caused by the presence of nitrogen in the earth where they formed. Color grading for most diamond is done on a scale of D to Z. A diamond with more color than a Z is a ‘fancy colored diamond’ and could be a different color like pink or blue. These ‘fancy colors’ are not graded on the same scale.
Common Grading Standards
AGS and GIA Standards
Cut Influences Color
Diamonds in the D-Z scale are graded face-down, viewed through the side of the pavilion. This is because shape and cut quality both influence how light gets in and out of the diamond; grading face-down allows for a neutral assessment of body color. The brilliant cutting style is most efficient for returning light, so a round brilliant or princess may show less apparent color face-up than a step cut like an emerald or asscher.
Above-Average Cut Quality
High Performance Diamonds = Less Color Face Up
Only a fraction of the world’s diamonds have such cut quality; they are rare enough that most people have never even seen one. When buyers are considering such cut quality we urge them to dismiss preconceptions and find the “perfect” diamond in a range of color that fits preference and budget; since diamonds of several adjacent color grades will be indistinguishable from one another.
Light getting in and out of the diamond does not illuminate body color the way light trapped inside the diamond does.
Our favorite manufacturer of high performance “superideal” round and princess cuts is Infinity Diamonds, a boutique operation in Antwerp, Belgium. Infinity crafts only 1000 diamonds per year, with a complete focus on cut quality for unsurpassed performance and precision. We are proud to be a Select Infinity Dealer and consider them our private diamond cutter.
In addition to the American Gem Society grading report with Ideal light performance and actual AGS ASET® images, Infinity diamonds all include Hearts & Arrows cut precision photos. Infinity also boasts the world’s first “superideal” princess cut.
Founder Paul Slegers’ high performance design for Infinity pre-dates GIA’s Excellent cut grade, the AGS Ideal performance grade and HRD’s high clarity Hearts & Arrows grade. Every diamond exceeds the standards of those systems and goes farther, answering to a higher authority in the person of Mr. Slegers. He takes every diamond from birth to final polish with excruciating attention to detail. His “Crafted By Infinity” inscription will only be branded on 1000 perfectly cut diamonds this year.
Infinity clients include renowned diamond collectors, appraisers and researchers in the world’s strictest grading laboratories. Paul Slegers’ uncompromising standards and modest pricing combine to make Infinity the perfect choice for architects, engineers and diamond enthusiasts seeking technical perfection, as well as “regular people” seeking the world’s highest level of cut quality.
With over 50 combined years of dealing with fine diamonds the staff of High Performance Diamonds has sampled and sold every “superideal” brand in the world. We judge Paul Slegers’ boutique Antwerp operation to be the finest: Every Infinity is absolutely, truly a superideal… but not every superideal is an Infinity.