Diamonds come in different shapes Read more https://www.jewelryare.us/shape-of-a-diamond/

1. Shape of a Diamond

2. Diamonds come in different shapes, therefore, each shape’s
quality is dependent on its special characteristics. Determine
what shape you want below and find out the characteristics of
the most adorable diamond.
Round
Of all the diamonds, the round brilliant cut diamond continues to
be the most researched and most popular you can get. This has
been improved over the years (about 100 years) as diamond
cutters use advanced theories and mathematical calculations for
the optimization of the brilliance and fire in a round diamond.
Aside from its popularity, the round diamond offers the greatest
flexibility in terms of color, clarity grades, and balancing cut,
without compromising the fire and brilliance.
To get a traditional round diamond with the highest brilliance, go
for anyone in the two highest cut grades, which is ideal or very
good, and for the polish and symmetry grades, go for a perfect,
excellent or very good.

3. Princess
Of all the non-round diamonds this is the most popular. It
is a common pick for engagement rings because of its
unusual cut and beautiful brilliance. It is typically square
in shape and with sharp corners. When going for a proper
color grade, be aware that despite the exceptional price
of a J-color non-round diamond, there may be slight
clarity of colors in its corners. Additionally, the
rectangular or square shape of princess-cut diamonds can
alter in dimension.
For a square shaped princess diamond, the length-to-
width ratios should be among 1 and 1.05. If what you
want is a princess-cut diamond with a square shape, then
go for those with length-to-width ratios above 1.10.

4. Emerald
This shape is particular because of the way in which its pavilion is
cut. It is given an unusual optical appearance by cutting with
rectangular facets. The Emerald has bigger, open table and so
highlights a diamond’s clarity. If you want to go for a low clarity
grade emerald, it is good to accurately check the clarity plot on its
certificate. Moreover, these diamonds are not the same in their
rectangular shape. Those wanting to purchase an emerald having a
squared outline are advised to choose an Asscher-cut diamond.
Asscher
Even though square in a shape, similarity occurs among this shape
and the emerald-cut. For instance, this shape has pavilion similar
to the rectangular side style of cut as seen in the emerald-cut. The
shape of a diamond expresses its clarity, it is recommended that
the diamond certificate which contains the clarity plot is viewed
when looking for SI-clarity. It should be remarked during selection
for a color grade that even at an exceptional price, a J-color non-
round diamond may appear at the corners faintly.

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