Why Fancy shaped diamonds are not given cut grades?

Fancy shaped diamonds are usually shaped to enhance aperture settings, including the sparkle, fire, brightness, and overall aesthetic attractiveness of the diamond when light strikes it. Conversely, rough diamonds are opaque and lacklustre until they are cut and polished. Diamond slicing creates facets (or faces) that bounce and refract light back to the eye, giving a dazzling impression. The angles, positions, sizes, & shapes of the facets determine the diamond's brilliance; hence, cut type and quality directly influence light performance. The two primary faceting types are brilliant & step-cut faceting used to create fancy diamond forms. It means stretching, shortening, adding, or deleting facets inside the pavilion & crown of the diamond, and there are practically unlimited methods to optimise illumination return, fire, & emission spectra.

However, we can all agree that each shape has particular principles for which the Fancy shaped diamond cutter should strive.

Flame, intensity, & life are all formed by a simple algorithm that defines the exact length & orientations of the facets abutting in perfect alignment to ensure that light moves properly throughout the diamond. That's the crux of the problem: determining the precise dimensions, depth, & crown angles of each diamond to assure that it is 'ideally cut.'

By calculating a fancy shaped diamond's profundity & table percentages, excellent cut grades can be assigned to any fancy diamond pattern. The width of a diamond's tables or total depth is divided by its diameter to compute depth and table percentages; for illustration, if a fancy shaped diamond's real depth is 5.6mm and the radius is 5.0mm, the depth proportion is 56 per cent. These numerical computations, which are loosely based on the optimum brilliance cut faceting method used for graded rounds, assist us all in determining if a diamond could sparkle appealingly. In addition, users can get a good notion of how nicely a diamond has been cut by combining it all with a diamond map illustrating the faceting style of the pavilions of the diamond.

The GIA assigns a cut grade to each fancy shaped diamond, one of four. Not only does the cut quality of a diamond affect its look, but it also determines its price. Here's what to predict from each cut in terms of appearance, light dance, & rarity:

That's the best mark which is excellent, indicating that the diamond is in the top 3% of all diamonds on the planet. Exceptional cut diamonds are expertly made & precisely cut to produce maximum radiance and shine. As the light goes through, there is very little light dissipation.


Cut of this quality is included in a very good class that captures practically all of Fancy cut diamond brilliance. These diamonds are incredibly bright, and light leakage is low. When you're on a tight budget, a Very Good cut may be the best option, allowing you to focus on hue, purity, or carat weight. The top 15 per cent of the total of diamonds are graded at this level.

Fancy cut diamonds of such good quality capture light nicely and have a lot of radiance. Light leakage occurs in well-cut diamonds, yet they nevertheless sparkle brightly. Cutters may cut to Good proportions on purpose to accomplish a specific look or style. The best 25 per cent of the total of diamonds have a cut grade of Good or above.

Fancy cut diamonds with substantial light penetration are given a fair or poor rating. Because they are overly irregular, such diamonds leak a lot of light and have low brilliance. Therefore, this type is best avoided since it will not produce dazzling jewellery. Therefore, this type is included in the poor class of diamonds.

How Does the Form of a Fancy Shaped Diamonds Affect the Price?

The round brilliance is the most valuable fancy cut diamond. This cut is also the most expensive diamond engagement ring cut. It isn't only because it is the most wanted: The round brilliance has the most facets of any form, which necessitates more precise work & requires cutters to abandon more poor diamonds, resulting in buyers paying for a bigger stone than they get. 

Users may save money by using fancy forms. For example, fancy shaped diamonds (such as turquoise, oval, and Amber shapes) can protect consumers up to 25 per cent of amount more than brilliant spherical diamonds of the same carat size because less of the raw diamond is wasted during the cutting process. In addition, these forms have a distinctive, unusual look while still having complex faceting and outstanding light performance, making them a suitable compromise between sparkle and cost.

Look for diamonds with at least excellent lustre & symmetry, which implies that both facets are perfectly aligned & polished, with distinct junctures that carry light from one region to the next. Work with professional jewellers or gemologists to determine which surface & depth percentages will guarantee that the diamond is cut to specific proportions, plus keep an eye on the dimension to width ratio to ensure that the diamond's form remains within reasonable limits. Any diamond that isn't round is classified as fancy diamond form. However, there are currently no globally agreed standards for certifying the cut of non-round diamonds. Hence, certifying laboratories do not perform this service. Instead, retail businesses must assess the cut quality for these forms.