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1. Introduction |
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This document has some
interactive hyperlinks to additional text [ , ]
and figures [ ]
as well as some interactive modelling software. We recommend you use
these hyperlinks and to work on your own in order to better understand
the ideas stated. We are sure you will enjoy playing with this software
and you will better understand the article as well.
Two software packages is used here for interactive demonstrations:
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operates as a component of your web browser (Internet Explorer
is only supported). It will be installed automatically when you
enter the interactive page.
]
operates as standalone application. You need to | Introduction | ||
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| This article is devoted
to the study of diamond cut. Application of computer modeling technologies
to studying diamond cut and developing a cut grading technique is
demonstrated. To build an effective cut grading system one must not
only model correctly the diamond under study, but also the illumination
and the observer. Conditions of observing white and colored rays in
light passed through a diamond are analyzed. The diamond is considered
as an object that produces inhomogeneities in the spatial distribution
of light. We also discuss how to proceed from analyzing model diamonds
to grading the cut of real stones .
The article is directed to specialists on cut issues rather than a guide to consumers in the process of buying a diamond right now. It contains some considerations about the future practical value of a cut study grading system being developed. We use a language such as facets, prisms, ray paths, mirrors, reflections, and so on. This language is useful for understanding and explaining various phenomena, and many researches uses this language when analyzing and quantitatively describing different phenomena in relation of diamond appearance. In posting this material we wish to bring attention to the importance of understanding appropriate illuminating and viewing conditions, and we aim to stimulate collaboration toward a standardization of observation conditions for evaluation of diamond appearance. |
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| Recent achievements | ||
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If it's time to learn how to grade diamond cut and how to distinguish between good and bad diamonds (from the viewpoint of their cut quality), we can suggest an appropriate method (technology, approach). At the initial stage of our research we have studied of appearance of ideal symmetry diamond models: and at the second stage we have posted our approach to nonsymmetrical diamonds in September 2000:
Important events regarding our approach have occurred since that time.
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| Authors : | ||
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For correspondence: |
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©
2002 Sergey Sivovolenko, Yuri Shelementiev, Vladimir Onischuk, Garry
Holloway
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