The cut of a diamond is graded from ideal through to poor. The quality of the cut is determined by percentile proportions and the angles used to shape a stone. Having a well cut diamond is essential to the brilliance, fire and scintillation of a diamond. Brilliance refers to the return of light within a diamond. If a diamond is cut too shallow or too deep, the return of light will be lost inside a diamond or "leaked" out through poorly angled facets. Fire is the term used to describe flashes of colour resulting from spectral separation or dispersion of white light into rainbow flashes. Fire is heavily affected by the crown and other facet angles. Scintillation is often thought of as contrasting dark and brightness that alternates from facet to facet and attracts our eyes as the diamond, the illumination or the observer moves. The Gemological Institute of America (GIA) defines scintillation as "flashes of light reflected from the crown" - in other words, sparkle.
Hearts & Arrows
Jason Withers Original Diamonds specialises in sourcing the finest cut, triple excellent Hearts & Arrows diamonds. Hearts & Arrows is a term used to describe the visual phenomenon that appears in the world's finest, ideal, round brilliant cut diamonds. A Hearts & Arrows ideal cut diamond is the ultimate, most magnificent cut diamond man can produce. Hearts & Arrows ideal cut diamonds account for less than 1% of all diamonds cut. The highest grades of polish and symmetry allow it to reflect more light than the standard American ideal cut. A diamond which possesses these qualities will show distinctive hearts and arrows shapes when viewed under a proportion or fire scope.
Triple excellent Hearts & Arrows diamonds are exceedingly rare and difficult to obtain. Only a tiny allowance between the ratios of proportions is allowed in order to cut the perfect diamond. A Hearts & Arrows diamond is guaranteed to sparkle more than any other cut and is a truly beautiful phenomenon.