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Press Release: The Fall 2013 issue of the Gemological Institute of America's (GIA) industry-leading peer-reviewed quarterly journal Gems & Gemology'(G&G) journeys to the Museum of London’s astonishing new Cheapside Hoard exhibit of centuries-old jewelry; discusses “digits,” a naturally occurring pattern resembling fingers that is most often found in Ethiopian opal; unveils a useful clue indicating corundum heat treatment; reports on agates from Morocco; and much more. The issue is now available in print, and online with exclusive video content. 
G&G’s cover story offers a remarkable preview of the Cheapside Hoard, an unrivaled collection of nearly 500 gems and jewelry pieces believed to have been buried in the 17th century that lay undisturbed in London until 1912. Museum of London's director, Sharon Ament, and senior curator, Hazel Forsyth, discuss the remarkable history and gemological significance of the collection, which is being exhibited for the first time since the Hoard’s discovery. Among the pieces chronicled are a gold locket featuring an image of Elizabeth I, a delicately carved cameo inspired by the Aesop fable “The Dog and His Reflection,” and an enameled gold ring set with a table-cut diamond, an evolutionary cut developed in the mid-fifteenth century. The exhibit is now on display through April 27, 2014.
Next is an examination of finger-like digit patterns mostly found in gem-quality Ethiopian opal. In another feature article, John Koivula, GIA’s chief research gemologist, documents a useful visual clue that indicates possible heat treatment of corundum, resulting from the conversion of limonitic residues to hematite in surface-reaching inclusions. The issue also includes a report on the chemical and mineralogical analysis of solid inclusions in Moroccan agate.
The Fall 2013 issue introduces a new G&G article category, the field report, which chronicles GIA expeditions to gem-producing areas and details future lines of research and publication. This issue recounts the July 2013 journey of Duncan Pay, G&G’s editor in chief, and a GIA research team to three sources of Oregon sunstone.
Since the first issue of Gems & Gemology was published in 1934, it has been recognized as one of the leading academic journals in its field. In 2013, G&G was made available in its entirety online. Today, the award-winning quarterly journal is available both as a print subscription and at no cost on GIA’s website.
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