Comparison between perfect and wrong facet angles

of Spinel. Refractiv index 1.72

Barion cut.    Ceylon cut
Perfect cut    This cut produces a window
This correct cut spinel shows a total reflection and also the camera. If you look at this stone without the camera the color and fire is perfect.    This inappropriate cut does not bring out the fire and brilliance hidden within this stone. The background color mixes with the color of the stone. You can read a newspaper through the stone.
The smallest cutting angle of the pavillion mesures 45 degree  This is why this cut shows a perfect brilliance    The smallest cutting angle of the pavillion mesures 14 degree  This is why you can see through the stone
Notice the difference of the cutting angles of the pavillion.    The cutting angles in the center are to flat and cause this loss in brilliance. The cutter tries to conserve the highest possible weight, because he is paid for the weight and not for the beauty of the stone.
Hubert Heldner   April 1999
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