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Gemstone cutting

John Dyer




Why is good cutting  so important?
How a gemstone looks is all-important. People buy a gem so that it will look good, both to themselves and to others. That’s where good cutting comes in. Many gemstones only sparkle around the outside with a kind of dead spot in the middle. This is known as a “windowed” or “fisheye” gemstone.  When the bottom facets are cut at too shallow an angle, the light passes through without being reflected. This results in a stone with a ring of brightness around the outside and a lighter colored “window” in the center. (See photo below.)  In these modern times “windows” are for computers. Poor cutting belongs to a bygone era when customers were not educated or picky enough to care about the quality of their gem. A simple "colored stone" becomes a real GEM with good cutting.  
MODERN EQUIPMENT Good cutting requires experience, creativity and modern machinery. We at PRECIOUS GEMSTONES employ the latest technology to bring you a superior gem. Many cutters overseas use a rather crude method of cutting. They simply glue the gemstone to a stick and hold it to a grinding wheel. Such methods cannot consistently produce beautiful gems. We use only modern, accurate faceting machines. We employ only experienced gem cutters who know how to bring the best out of a piece of rough. As much as possible, we try to cut our gemstones without internal flaws or inclusions. This guarantees that you will have a gemstone you can be proud of. 
  Fisheye or "Windowed" Stones  
With a little practice, a “windowed” or “fisheye” gemstone is easy to recognize.  You can see right through and even read through the gem with poor cutting. This is a good test to apply to any gemstone before you buy. What a difference good cutting makes. 


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