Lecture 9 - Quote of Day Diamonds are nothing more than...

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Unformatted text preview: Quote of Day Diamonds are nothing more than chunks of coal that stuck to their job. (Malcolm Forbes) http://en.thinkexist.com/search/quotation.asp?id=145787 Chapter 3 Buying a Diamond To make a good purchase of a loose diamond, you need to consider a number of properties. You might have heard of the 4Cs (cut, color, clarity, carat). These are very important to consider, but there are also some other characteristics or parameters to think about before purchasing. Here is my list of what I think is important. Shape / proportion Symmetry Color Clarity Size Polish Fluorescence Certification Source / origin Purchasing a loose diamond http://www.allenjewellers.com.au/images/520076.jpg Loose diamonds Diamond in setting http://www.howard.ca/images/d_loose2.jpg SHAPE Traditional & common Provides most sparkle Brilliant http://www.waxpatterns.com/2001%20website/Diamond_Cut.jpg http://diamondss.com/ImgUpload/P_677201_751651.jpg Top view SHAPE 32 facets above girdle plus table 24 facets below girdle http://www.waxpatterns.com/2001%20website/Diamond_Cut.jpg http://diamondss.com/ImgUpload/P_677201_751651.jpg table http://www.waxpatterns.com/2001%20website/Diamond_Cut.jpg http://diamondss.com/ImgUpload/P_677201_751651.jpg Star facet http://www.waxpatterns.com/2001%20website/Diamond_Cut.jpg http://diamondss.com/ImgUpload/P_677201_751651.jpg Bezel facet http://www.waxpatterns.com/2001%20website/Diamond_Cut.jpg http://diamondss.com/ImgUpload/P_677201_751651.jpg Upper-girdle facet http://www.waxpatterns.com/2001%20website/Diamond_Cut.jpg http://diamondss.com/ImgUpload/P_677201_751651.jpg Pavilion facet http://www.waxpatterns.com/2001%20website/Diamond_Cut.jpg http://diamondss.com/ImgUpload/P_677201_751651.jpg Lower-girdle facet http://www.waxpatterns.com/2001%20website/Diamond_Cut.jpg http://diamondss.com/ImgUpload/P_677201_751651.jpg Note: You do not want the culet to be a really sharp point. It can break off too easily and cause more damage than if the gemologist grinds it down slightly. Culet http://www.waxpatterns.com /2001%20website/Diamond_ Cut.jpg The girdle provides the contact surface for the prongs of a ring setting. It should not be sharp edged, otherwise a sliver of the diamond can break off more easily and hurt the entire stone....
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Lecture 9 - Quote of Day Diamonds are nothing more than...

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