This type of pink pyrope garnet, believed to have been mined in Tanzania, shows a distinct colour-change phenomenon resulting from its unique chemical composition.
Read MoreAnalyses the chemical composition and inclusion characteristics of this ancient artefact.
Read MoreThis article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Read MorePyrope-spessartine garnets from Tranoroa, in southern Madagascar, contain appreciable Cr and somewhat lower V contents.
Read MoreChina has identified many deposits with significant potential to produce gemstones; various species are discussed.
Read MoreRed garnets have been mined in the Bohemian Hills of Czechoslovakia since the 16th century.
Read MoreThe gemmological properties and chemical compositions of two unusual colour-change garnets are reviewed.
Read MoreMines in San Benito County, California, produce andradite in various colours; some are chatoyant.
Read More“Rainbow” andradite from Nara, Japan, occurs as relatively small orangey brown crystals that show attractive iridescence in almost the entire range of the spectrum.
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