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generation of Asha®
being cut to the
exacting standards of Hearts and Arrows cuts, something fewer than 1 in 1000 (thats less than .1%) round cut diamonds will ever achieve! This article is designed to help you understand the difference between a typical round cut stone, and a Hearts and Arrows round.
Hearts and Arrows
is an industry term for a specific type of round cutwhere
all facets are in perfect alignment, proportion and
symmetry. Cut is one of
the four major components of diamond grading.
Cut controls 98% of the brilliance of a round cut gem or diamond. However,
cut is often the least
understood of the four C's, and often the most
disregarded. It's easy to
understand carat weight, color and clarity, but cut
top half of a round diamond is called the 'crown'. It is the crown that
dictates the amount of fire of a round cut gem (how much light is broken into its spectral colors). The bottom half
of a round cut is termed the 'pavilion'. The bottom
half controls how much light that enters the diamond is
to the viewer - this is termed its
How the facets on both the top and bottom half
of the round cut gem line up (symmetry) determines a gemstones
scintillation, or the way it plays with light as it reflects it to the viewer.
The interplay of all of
these facets on both the top and bottom half of the diamond
or diamond simulant control how much light that enters a the
stone is returned back to the viewer. The inside of a
diamond can be represented as a hall of mirrors. The more
precisely aligned and shaped the mirrors, the more light
will be reflected back out rather thanlost as it bounces
between mirrors. In a typical diamond, roughly 68% of
the light that enters ends up being reflected back to the viewer.
By contrast, in a
hearts and arrows diamond, 96-98% of all light that enters
is reflected back out! This is a result of a
painstaking effort on the part of the cutter to ensure that
all facets (mirrors) are perfectly symmetrical, in perfect
alignment and perfectly proportioned. It is very easy to
see the difference in diamond when comparing a
diamond to a hearts and arrows diamond. The difference is
simply a much more brilliant stone!