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Princess-Cut Gemstones

Princess-Cut Gemstone
Princess-Cut Gemstone

The princess cut is a relatively recent development in gemstone design, but one which has become remarkably popular. In fact in the diamond world it has become the second most popular shape after the round brilliant cut. It is now being used extensively for colored gemstones as well.

The princess cut was developed to solve a specific problem in gemstone cutting; the most attractive way to cut a square or rectangular gemstone. The classic solution to the problem was the step cut. Used in emerald and baguette cuts, the step cut emphasized color and luster, but at the expense of brilliance, scintillation and fire.

The step cut has a large flat table with broad, flat facets resembling steps of a stair. The princess cut, by contrast, is a modified version of the brilliant cut with 76 facets in its typical form. The technical description for the princess cut is "a square modified brilliant cut".

Emerald-Cut Citrine Gem
Emerald-Cut Citrine Gem

The princess cut has its origins in 1961, when Aprad Nagy in London developed what is now known as the "profile cut". Since Nagy's cut was much flatter, the modern day princess cut is now attributed to Basil Watermeyer, a diamond cutter from Johannesburg, who in 1971 developed the Barion cut. Though the Barion cut and its variants were protected by patents, a number of these patents expired during the last 10 years and stones cut in a similar style are now known as princess cuts.

Round Brilliant Cut Gem
Round Brilliant-Cut Gem

There many variations on the princess cut. Ideally a princess-cut stone should be fully square with a 1:1 length to width ratio. In practice, the length to width ratio may be as high as 1.15:1. The princess cut usually has 76 facets, but there are other versions with at least 45 facets.

The princess cut does have some weaknesses. The four pointed corners are prone to both chipping and light leakage. This has led to cuts being developed with tapered or beveled corners. But many gem aficionados believe that these detract from the timeless look of the princess cut.

  • First Published: December-12-2009
  • Last Updated: August-25-2017
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    Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.
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Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
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Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

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