With the use of modern tools and technology, this article sheds light on the history and provenance of both the French Blue and the Hope diamonds.
Read MoreThis article describes what is known about the Wittelsbach Blue since it was first reported in 1666, and the gemmological information released to date on this diamond.
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.
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.
Read MoreDuring a career that spanned more than 65 years, the eminent Swiss gemmologist Dr. Edward J. Gübelin (1913–2005) built a monumental legacy.
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 MoreG. Robert (Bob) Crowningshield has made many significant contributions to the study of gems and the science of gemmology.
Read MoreOn this occasion—the celebration of Richard T. Liddicoat’s 50 years of guiding Gems & Gemmology—it is fitting to review his enormous impact on the field of gemmology.
Read MoreThe submission of a large (4.54 ct) jeremejevite of an unusual—yellow—colour to the AGTA Gemmological Testing Centre prompted a search of the available gemmological literature.
Read MoreThis second major article in a three-dimensional modelling study analyses fire – the visible extent of light dispersed into spectral colours.
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