Appraisal educator, the late Anna Miller lives on in the newly revised 3rd edition of her groundbreaking book Gem & Jewelry Appraising. Miller’s original appraisal book, first published in 1988, was the first on the…
Book ReviewThe article, In Support of the Term Stabilized Ruby, published in the March/April 2010 issue, elicited mixed response and concern over proper terminology. Gemworld is not opposed to the term glass-filled ruby. However, due to…
Featured ArticlesRough diamond prices continue to outpace polished prices. Princess cuts and cushions resume production but other fancies are in short supply. Top makes are harder to obtain, partly due to restocking finally resuming in the…
Diamond MarketInitiatives in Art and Culture, based in New York City, hosts many conferences related to the arts and culture. Recently, some topics of interest crossed into the gem industry. They presented a conference on coral…
Featured ArticlesThis article endeavors to provide a brief discussion of the new research concept known as archaeogemology, a relatively unknown discipline that applies a multidisciplinary approach to investigate the identity and origin of gem artifacts and…
Featured ArticlesMost materials are diamagnetic, that is repelled by a magnet. Those containing any of the transition elements iron, manganese, chromium, etc., or the rare earths may be paramagnetic or attracted to a magnet. Ferromagnetic materials…
Featured ArticlesThis article was developed from information submitted by Jon Phillips, Corona Jewellry Company, Toronto, Canada. A diamond that the company acquired was only .18 carat but proved to have an inter- esting purplish red inclusion. The…
Gem NotesSpinels offer one of the best choices for jewelers looking to create attractive designs from a natural product that boasts all the attributes that gemstones are supposed to exhibit. The market is currently enjoying a…
Market TrendsIn late 2009, the Accredited Gemologists Association called attention to “ruby†products being sold as natural ruby in spite of the presence of a considerable amount of lead-glass component in the stones. In a hidden…
Featured ArticlesIt was only in the early 1980s when scientists like the well-known mineralogist and gemologist George Bosshart demonstrated the usefulness of spectrometers in gemstone analysis. Surprisingly enough, only a few laboratories jumped on the train…
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