Shallow stone: A diamond on which the pavilion facets are at an angle of less than 39 or 40 degrees to the girdle plane. The less the angle the greater the loss of brilliancy.
This material's main attribute is its high clarity, but the flat crystal shapes generally yield overly shallow stones. Due to the high iron content, which quenches fluorescence, most stones tend to have a garnet-red color.
Princess cutting does not work well with shallow stones, but this causes no problems. It is also best with stones which are square or only slightly oblong for the same reason that round diamonds look better than oval ones.
The princess cut does not work well on shallow stones so you need to be careful. The final stone will look good if the rough one is slightly square or oblong in shape, just as round diamonds obviously are more appealing than oval ones.
The production process might vary from one design to another, but after the jewelry was cast and prepared, it went to a stonesetter, who drilled the shallow stone locations with a pointed bit and set the rhinestones by forming the bead of metal that ...
 See also: Stone, Jewel, Cut, Import, Point
  
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