People often confuse the term “cut”
with a diamond’s “shape.” In fact, the cut
of a diamond refers to the proportions and symmetry of a diamond and its
ability to reflect light through the top of the diamond. A rough diamond is evaluated to determine its
best possible cut in order to maximize clarity, color, and carat weight.
A diamond’s shape refers to the
appearance of the stone, and includes round, princess, emerald, asscher,
marquise, oval, radiant, pear, cushion and heart. For years, the most popular shape of diamond
has been the round brilliant-cut. The Gemological
Institute of America says that for more than six centuries, diamond cutters
have been working toward perfecting the round brilliant-cut. Today’s 57 or 58-facet round brilliants are
the result of a variation of facet sizes and proportions that have evolved
through the years including “table size, crown height, length of the lower half
facets, total depth, and culet size.”
Round brilliant-cut diamonds with 58
facets have a culet, which is the small area at the bottom of a diamond’s
pavilion or tip. When the point is cut
off, it is called a culet and counted as one of the facets, which is why diamonds
without a culet have only 57 facets. A
diamond is considered to be a better grade if it does not have a culet or only a
very small, small or medium-sized one.
Larger culets affect the appearance of the diamond and can make it
appear as if the diamond has a hole in it.
Today as many as 75% of all diamonds sold
are round brilliant-cut. The reason for
this may be that the cut maximizes the diamond’s ability to reflect light and
brightness better than other fancy shapes.
However since more of the stone is lost in the cutting process along
with the fairly low yield/high demand for brilliants, they cost more than comparable
cushion, princess, asscher, oval and emerald shaped diamonds.
As a family-owned business, Padis Jewelry has been a trusted source for buying exquisite certified loose
diamonds, engagement rings and fine jewelry since 1974. We are one of the only jewelers in the area that
offers such an exclusive selection of top names in the industry as well as such
a large inventory. If you are a lover of
beautiful jewels, schedule at visit to San Francisco’s best jewelry store.
Source:
gia.edu/gia-news-research-round-brilliant-cut-diamond-pay
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