This article explores and identifies the changes that type IIa GE POL diamonds experience before and after HPHT annealing.
Read MoreHigh-quality CVD-grown diamonds, comparable in colour and clarity to natural diamonds, can be identified using a combination of gemmological and spectroscopic properties.
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Exploration of a chart designed to give jewellers and gemmologists a practical guide to identifying synthetic diamonds as they enter the jewellery trade.
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The diamond industry has been buffeted by extreme price volatility during the last decade, unlike any encountered since the Great Depression of the 1930s.
Read Morethis article reviews the rise of the modern diamond cutting industry in India and its impact on the world diamond trade
Read MoreWith the information from a combination of tools now available, the sophisticated gemmologist can fingerprint a given stone.
Read MoreIntroducing a new technique in diamond cutting that virtually eliminates the "bow-tie" effect.
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 MoreEight decades after the Cullinan diamond was mined, a team of gemmologists examined the two famous gems that were created from it to become part of the Crown Jewels of England.
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