Diamond is usually round and round shaped diamond is extremely popular too. The Round cut diamond shape is popular as it has the maximum shine and brilliance and would fit in to any design and style of the engagement ring. From a solitaire to a band of diamonds, or three stone ring. The round shape diamond has the maximum number of facets as compared to other shapes hence this is the only shape in diamonds which shines the brightest.
It is also the most brilliant of all the cuts. You may have heard of a term called "ideal cut". This term refers to the attempt to cut a Diamond into the best proportions to achieve maximum brilliance. There are 58 facets in a Round Brilliant Cut including the culet. These 58-facet cut, divided among its crown (top), girdle (widest part) and pavilion (base), is calibrated through a precise formula to achieve the maximum in fire and brilliance.
On the Crown or upper part of the Diamond, these consist of 1 table facet, 8 bezel facets, 8 star facets, and 16 upper girdle facets for a total of 33. On the pavilion, or bottom part of the Diamond, there are 16 lower girdle facets, 8 pavilion main facets and 1 culet.
Rounds are the most expensive cuts, and with good reason. It is usually possible to retain more weight from a Rough (unpolished) Diamond if it is cut into a Fancy shape than if it is cut to a Round. The depth percentage should range between 58 to 63 percent and the table percentage should range between 55 to 64 percent. The most desired percentages are the 60 percent, and perfectionists will look for depth of 59 through 62 percent and table of 56 through 58 percent.
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