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Tabulation of the 15 stones presented as examples of 5 Categories The article concludes with photos and proportion data of 15 stones given as examples of 5 Categories of cut quality. The Categories are presented as the ‘foundation’ of an eventual grading system, but a vague qualification is added; they may not be th...

A review of the “foundation” of GIA’s new cut grade system CLICK HERE TO VIEW POST

Your first day, getting to know the product This morning, you flew into an area in the Arctic, seeing a huge pit from your helicopter. On the ground, enormous trucks pass by carrying tonnes of earth. Your first question to the engineer, guiding you around: how many kilos of diamonds in such a truck? He explains ...

Just imagine CLICK HERE TO VIEW POST

Yesterday's article "U.S. Jewelry Market Becoming More Fragmented" reminded me about The Cluetrain Manifesto where Chris Locke had followed the markets' fragmentations based on automobile industry. At the beginning consumers "can have any color they want as long as it's black." Then "General Motors broke For...

Markets’ Fragmentations is a Natural Proces CLICK HERE TO VIEW POST

I know there is an atmosphere of fear concerning Pricescope apparent in some of the postings on Polygon. Now, this is not universal, as occasionally someone will post that they have decided to participate with Pricescope. Many diamond vendors on Polygon do list their merchandise in many places on the Internet anyway...

Posting to Polygon members about Pricescope 11/11/04 CLICK HERE TO VIEW POST

Updated: 3/7/2019 You already learned that cut is the most important factor affecting the beauty of a diamond. The aim of this tutorial is to illustrate what it takes to achieve the ultimate in cutting precision and perfection - super ideal cut Hearts and Arrows diamonds. by Whiteflash Inc., Manufacturer...

Hearts and Arrows Diamonds and The Basics of Diamond Cutting CLICK HERE TO VIEW POST