Andesine Feldspar
Transparent red andesine appeared in the market in 2002. At first, only small quantities were observed. Dealers stated that the apparently new, rare, stone was coming from a small deposit in the Congo. The GMN…
Featured ArticlesOrigin- Where is it Really From?
Only two people know the origin of a gem: God and the miner and the second is suspect. C.R. Beesley, American Gemological Laboratories, 1982. The father of origin determination is considered to be the late Dr…
Featured ArticlesGem Rough Scams
This seems logical enough since most finished rubies and sapphires are less than one carat in size. But that little fact does not stop the ethically challenged from singing the praises of gem quality corundum…
Featured ArticlesGem Money Scheme Exposed
In a story we first reported in the May 2006 GMN (Fraud in the Gem and Jewelry Industry), an investigation was pending on a California company. When we first broke the story, AMX Global Funding…
Featured ArticlesThe Accredited Gemologists Association International Conference
The annual AGA conference, held in Tucson each year, has become the forum for confronting the challenges facing the international gem industry. This year was no exception. The day long program ambitiously tackled issues of…
Featured ArticlesDisclosing and Explaining Treatments- A Business Model for Retailers
An example of a systematic disclosure module that enables retailers to enlighten the positive aspects of their enhanced gemstones is provided. The system is based on the degree of enhancement/treatment, the rarity of routinely enhanced…
Featured ArticlesTechnology Update- Ultraviolet Light
Ultraviolet light sources for testing gem fluorescence have been a staple piece of gem equipment for decades. Emerging technologies will not only change the way you look at ultraviolet but will eventually redefine our industry…
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