It is important not to confuse the terms diamond "shape" and "cut". The shape is the geometrical form of the diamond such as round, heart or princess, while the cut refers to the precise angles and alignment of the facets and the way they affect the beauty and brilliance of the polished stone.
Contrary to popular belief and perhaps your experience in most shops, fancy-shaped diamonds (as all non-round diamonds are called) are often less expensive than round brilliants because the cutters are able to retain more weight from the rough diamond crystal.
Round Brilliant
Rounds are the most popular shape that diamonds are cut into and account for more than 75 percent of all diamond purchases. 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
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