November 2017

Like? Share!

Light Performance Grading – Diamonds Beyond the 4Cs

Due to their unique structure, diamonds have a special relationship with light. Unlike other gemstones, a diamond’s appearance is an expression of the way it plays with light as it bends and moves within the diamond. This will be influenced by the diamond’s cut, craftsmanship, natural inclusions and flaws.This is what is known as light performance grading.

In order to truly know and appreciate a diamond’s beauty, it is vital to understand the way that light behaves when it interacts with the particular diamond. Beyond the 4Cs, light performance is emerging as a new and revolutionary international diamond grading standard.

Light Performance Grading: 4 Ways to Measure Light Beauty

The light performance concept is based on intensive R&D conducted by Sarine Technologies on more than 23,000 stones. The research resulted in the definition of four key parameters that measure a diamond’s light performance: Brilliance, Fire, Sparkle and Light Symmetry.

Brilliance is the intense white light that radiates from the stone. Created by the diamond’s cut, Brilliance determines how the light that enters the diamond is reflected back to the viewer.

Sparkle is the dramatic, luminous flashes of light that occur as a diamond moves. The diamond’s sparkle reflects the quality of the cut, a direct result of the skill and craftsmanship of the professional diamond cutter.

Fire is the vivid flares of rainbow color that can be seen as light bends within the diamond. Diamonds with intense fire are appreciated for their fascinating play of color and beauty at different angles.

Light Symmetry is the measure of light distribution within the diamond, based on the cut proportions and the position of natural inclusions. A well-cut diamond features optimal proportions for equal light distribution.

Based on a set of advanced algorithms, the Sarine Light™ device grades the diamond’s performance in each parameter, and then combines the data to provide an overall light performance grading result.

See the Light Performance Grade; See the True Diamond

Light performance grading adds an extra dimension to the traditional 4Cs approach. In fact, light performance is a revolution in diamond grading – for the first time, there is a standard that provides an objective, scientific grading of a diamond’s visual beauty. Retailers around the world are presenting light performance to customers to help explain the diamond’s unique beauty and enhance the sales process. This new approach feeds back along the diamond pipeline to the planning and polishing stage, providing another set of guidelines for the creation of diamonds that meet the needs of contemporary jewelry consumers.


Subscribe to the Diamond Blog

Get the latest technology, grading and retail news straight from the source, straight to your inbox.



World Famous Jewelers Series Part 6: Chopard

Once Upon a Time in Switzerland… Our tale begins in the village of Sonvilier, Switzerland where we find Louis-Ulysse Chopard, the second son of Félicien and Henriette Chopard. Félicien was a farmer but he encouraged his sons to enter the watchmaking trade. Louis Chopard had a talent for the craft and quickly built a reputation […]

World Famous Jewelers Series Part 5: Graff

Born to be a Jeweler: The Meteoric Rise of Laurence Graff When 15-year-old Laurence Graff began his first apprenticeship in a jewelry manufacturing warehouse in London, he never dreamed he’d be honored with the Order of the British Empire (OBE) by Queen Elizabeth in 2013. In fact, after three months working in the warehouse and […]

World Famous Jewelers Series Part 4: Boucheron

The Jeweler of Place Vendôme: How Frédéric Boucheron Got His Start Frédéric Boucheron always knew he wanted to be a jeweler. He was born in 1830 to a family of French clothiers, and at a young age he apprenticed himself under jeweler Jules Chaise. By the age of 14, he had completed his apprenticeship and […]

World Famous Jewelers Series Part 3: Faberge

The Man Who Created The Egg In 1885,   Tsar Alexander III commissioned Faberge to create an Easter egg as a gift for his wife, Empress Maria Fedorovna. With this simple gift, the Faberge Imperial Egg Collection was born. The first egg was called the Hen Egg. Inside a white enameled shell rested a solid gold […]

World Famous Jewelers Series Part 2: Tiffany & Co

The name Tiffany & Co. evokes thoughts of little blue boxes, glass lamp shades, and for those who know, the Super Bowl’s Vince Lombardi Trophy. The store is famous for its Tiffany setting engagement rings, chain bracelets with an engraved heart charm, and delicate pendant necklaces. Where did this legacy start? Who is the man […]

World Famous Jewelers: The Names Behind the Designs.

Part One: Harry Winston Tiffany & Co., Cartier, Harry Winston – all famous jewelers and household names. We see their designs on the red carpet, along with Boucheron, Fabergé, Piaget, and many more. These companies are more than just brand names; they were the passion and brainchild of people who loved high quality, stylish jewelry, […]

Rough diamond planning

Cloud Planning: Make Your Rough Planning Up to 10 Times Faster

Planning rough diamonds with Advisor™ software is a complex process that uses loads of computer processing power. Today, with Galaxy™ inclusion mapping technology, the number of rough polishing plans created by Advisor is essentially infinite. With various advanced options to choose from, such as triple planning, Best Value™, CAP and more, the rough planning software […]

Tension Viewer: Reducing the Risks of Rough Diamond Sawing

In addition to all types of inclusions and flaws, rough diamonds have internal tension or stress that occurs naturally as part of their structure. Developed over millions of years during the diamond’s unique formation process, the level and location of tension within a rough diamond varies from stone to stone. When cutting a rough diamond […]

New Software Release: Sarine Advisor™ 7.0 Rough Planning

Advisor™ rough planning software is used by manufacturers worldwide to effectively plan polished diamonds and maximize the achievable yield. Sarine recently released the latest version of the industry-leading software, Advisor 7.0. The release is packed with dozens of new, advanced features, the result of user feedback received from diamond planners working with Advisor all over […]

Advisor 6.0 New Feature: Scoop Planning

Advisor™ is Sarine’s flagship rough planning software product, and the most widely used program of its type. Since its initial development and launch in 1995, the Advisor program, together with the Galaxy™ inclusion mapping system, has become a staple software for diamond manufacturers worldwide. We’re launching the first product post of the Diamond Tech blog […]