A presentation of parameters used to support GIA's symmetry grading system.
Read MoreThis article discusses the history and ongoing development of GIA's colour grading system, and explains how its laboratory applies it.
Read MoreThe GIA diamond cut grading system described here includes the components of brightness, fire, scintillation, polish and symmetry, as well as weight and durability concerns, into a single overall grade for cut quality for standard round brilliants.
Read MoreThis second major article in a three-dimensional modelling study analyses fire – the visible extent of light dispersed into spectral colours.
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 MoreDe Beers has produced a faceted synthetic gem-quality diamond that could go unrecognised without careful gemmological testing.
Read MoreIntroducing a new technique in diamond cutting that virtually eliminates the "bow-tie" effect.
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