The beauty of a diamond is not based on its shape, size, weight or rarity. It is based almost entirely on the QUANTITY and QUALITY of light that explodes from the top, all across the surface facets of the stone. This is called the Analysis of Cut and is the key to owning a beautiful diamond. Brilliance and fire are two kinds of light in optical physics. Together they create scintillation or sparkle. This is what people see from across the room when they view a diamond that is purposefully cut to hold all its light and explode it back to the eye.
The decision how to cut a diamond is made by the cutter. To obtain more light, the cutter must cut away and waste more of the rough, to produce the proper angles on the crown (top of the diamond) and pavilion (base of the diamond). All cutters know how to do this. Few cutters do it. Why? Because the majority of the public buys diamonds based primarily on carat weight and secondarily on the rarity features of color and clarity, with little attention paid to brilliance and fire. The great majority of both traditional and on line jewelry stores ask for and sell diamonds with average cutting, because what they want from their cutters are diamonds that weigh more. To obtain higher carat weight from the rough, cutters vary the angles and proportions of the crown and pavilion, causing lots of light to leak from the sides of the diamond, exploding into the carpet below.
If you compare a perfectly cut diamond with one of good cut, to one of average cut, to one which is poorly cut, can you see the difference among the 4 stones? Yes, easily. Training is not required. The explosion of light is right there before your eyes.
Jun 25, 2017 | TOM TIVOL
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May 3, 2017 | TOM TIVOL