In choosing diamonds, probably the most critical sides to take into account is the quality of cut with the gemstone. This, even more than the colour along with the clarity with the diamond, determines the amount of sparkle eminating from the gem. A properly cut diamond may have well proportioned and well angled facets which precisely reflect and refract the sunshine whilst preventing any from prematurely escaping over the back with the gemstone.
In a finished diamond, the widest part of the diamond is known as the girdle. The section here is called the pavilion as well as the section higher than the girdle is known as the crown. A diamond is held in the setting by its girdle, and so the crown is the fact that the main gemstone that is easily visible from the ring. The the top of crown is the table.
The table will be the largest and a lot important area of the complete cutting process which is the principle feeder point for light passing into the gemstone and it is also the facet which launches the most fire and sparkle. In a Round Brilliant cut diamond, the table is ideally 56% of the width from the girdle however proportion can increase dramatically up to and including massive 90% within the mirror cut.
In table cut diamonds, the table facet is formed in to a geometric square or square like shape, say for example a rectangle. This is unusual as the table element of most cuts is round, oblong, octagon as the like. Even square shaped Princess cut gemstones have octagonal table facets and the square like Cushion cut, a rounded square table.
However, the geometric table areas of the real Square cut and Baguette cut, themselves based on the Oblong cut are certainly not enough include them as true Table Diamonds. For the reason that they may be according to a step cut, where the facets across the pavilion are cut into steps parallel for the edges much like the sides of an Pyramid. The perimeters of true Table Diamonds are cut into gently rounding facets not steps. This assists maximise the glint in the gemstone.
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