This article discusses the history and ongoing development of GIA's colour grading system, and explains how its laboratory applies it.
Read MoreModern gemmologists and diamantaires are faced with a broad spectrum of colour and clarity treatments ranging from the simple to the highly sophisticated.
Read MoreHistorically, global rough diamond production has fluctuated greatly due to a myriad of causes, many of which are explored in this article.
Read MoreWith the information from a combination of tools now available, the sophisticated gemmologist can fingerprint a given stone.
Read MoreA mathematical model which can analyse how appearance factors depend on proportions.
Read Morethis article reviews the rise of the modern diamond cutting industry in India and its impact on the world diamond trade
Read MoreOver the last 25 years, the diamond-cutting industry worldwide has been revolutionised by sophisticated instruments that provide invaluable aid in the process of creating a polished gem.
Read MoreTwo instruments have been developed at De Beers DTC Research Centre, Maidenhead, to distinguish synthetic diamonds from natural diamonds.
Read MoreA treatise on the design, display, care and repair of fine gemstones.
Read MoreTwo major sources of error make spectroscopically determined colour grades unreliable.
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