A poorly cut diamond can be either cut too deep or too shallow. A deep
or shallow cut diamond will lose or leak light through the side or
bottom. This results in less brilliance and value.
The metal tip or bead that actually touches the stone and holds it into
place. This setting usually consists of four or six claws that cradle
the stone. Because this setting allows the maximum amount of light to
enter a stone from all angles, it sometimes can make a diamond appear
larger and more brilliant than its actual weight. This setting can also
hold larger diamonds more securely.
The proportions of a diamond are very important, so that the maximum
amount of light be reflected off and out of a stone. Proportion is the
relationship between the angles of the facets of the crown and pavilion.
A ring with an insignia, monogram, coat of arms or family crest. Simulated
(or created) gemstone: A human-made gem with nearly the same optical,
physical and chemical properties of a natural gemstone.
Symmetry is the arrangement of the facets and finished angles created
by the diamond cutter. Excellent symmetry of a well-cut and
well-proportioned diamond can have a great effect on the diamond's
brilliance and fire. Grading reports will often state the diamond's
symmetry in terms Excellent, Very good, Good, Fair, or Poor.
Well-cut proportions ensure the maximum compromise between fire and
brilliance. When light enters a properly cut diamond, it is reflected
from facet to facet, and then back up through the top, exhibiting
maximum brilliance, fire and sparkle.
