Index Figure 1 shows the typical case where the break facets are equally-spaced around the circle (360°/16 = 22.5° apart). Their slopes are shown for the main slopes and proportions cited. They are 0.86% and 0.83% deep, respectively, for the pavilion and crown = total of 1.69%. With a girdle thickness of...
Getting Diamond Information When shopping online there are two possibilities for diamonds you find listed in the Pricescope search or in diamond searches on different vendor websites. The diamond you have found is owned and stocked by the vendor listing it. In this case that diamond will not be listed ...
Let's start at the beginning. The Rappaport Diamond Report is a trade magazine for jewelers and others in the diamond business. It's a pretty good magazine. It's available by subscription only and interested subscribers can inquire at www.diamonds.net. One of the regular features is a diamond pricing grid that is us...
Why isn’t Rapaport pricing important for consumers? CLICK HERE TO VIEW POST
In a previous article, I briefly touched the aspect of perception in our judgement of numbers. I made the case, that since most diamond professionals first gather their knowledge with round brilliants, that they automatically apply rules for rounds to fancy shapes. This is also true with numbers. In this articl...
Numbers and perception, the case of square diamond-cuts CLICK HERE TO VIEW POST
AGS has given us cut-grading standards for Princess cuts. Designs having pavilions with 2 chevrons came first and, just recently, those with 3 and 4 chevrons. I prefer designs with minimum facets because they give stronger 'bang-bang' on-off reflections/contrast that attract the eye; they also take less time to cut ...
Vegas JCK Trade Fair My wife Drena left a week before me (with Vanessa) and visited some of our joint suppliers in ArezzoItaly, 100km south of Florence. Most unfair that she gets to go and that it seems I will not visit Europe this year; Italy is my favorite place to be, but they did some buying for me, so cant co...
July 29th today. About half a year ago, I wrote an article looking ahead at events and trends in the diamond industry during this year. Today, the Antwerp diamond business closes for their Summer holidays, and it is a good time to look at whether predictions came true and where my predictions were incorrect. ...
The diamond industry in 2005 – halfway review CLICK HERE TO VIEW POST
Introduction As one explores art galleries of Rome and of Florence, it is difficult to not become immersed in the literally brilliant use of jewelry in Italian Renaissant paintings. Considering the curious fact that many masters, most famously Botticelli, of the time were goldsmiths themselves...
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