Most diamonds are "spread" in their cutting to retain
maximum weight from the original rough. A heavier diamond
will result, but at a dramatic sacrifice of potential fire and
brilliance.
TOO DEEP When a diamond is cut too deep,
light* leakes out of the bottom, brilliance
is lost and the center of the diamond
will appear to be dark.
* Arrows in the diagrams indicate the flow of
light in the diamond.
TOO SHALLOW
When a diamond is cut too
shallow, light* leakes out of the
bottom, brilliance is lost and
the diamond appears watery,
glassy and dark.
* Arrows in the diagrams indicate the
flow of light in the diamond.