G&G publishes original articles on gem materials and research in gemology and related fields. Manuscript topics include, but are not limited to:Laboratory or field research;Comprehensive reviews of important topics in the field;Synthetics, imitations, and treatments;Trade issues;Recent discoveries or developments in gemology and related fields (e.g., new instruments or identification techniques, gem minerals for the collector, and lapidary techniques);Descriptions of notable gem materials and localities;Jewelry manufacturing arts, historical jewelry, and museum exhibits.