Pigeon blood ruby. Cornflower blue sapphire. Flame red spinel. The names conjure up great images in the mind of what these gems look like, but do we really know what their color is? Are these…
Featured ArticlesAccording to IDEX trading network, global diamond prices are up slightly for the early part of the year. After a steady year in 2006, prices started to move slightly in 2007. The last few weeks…
Colored Stone MarketThe market is slightly improved as the summer approaches. Activity in the colored stone market is concentrated in the finer quality products. Prices for many varieties in this category are up 20 to 30% from…
Colored Stone MarketCuprian tourmaline is the variety of copper bearing tourmaline mined from locations other than the original source of copper bearing tourmaline in Paraiba, Brazil. The GemGuide considers Paraiba to be an origin-specific trade name…
Featured ArticlesRecently, a client brought in a small assortment of gemstones to our lab and represented them to be crystallized tin from Bolivia. His initial excitement came in the hopes that this would prove to be…
Gem NotesOccasionally, the GMN takes a look at the broader market in an attempt to project the business trends that jewelers might encounter during the short-term. The recent news that the sub-prime sector of the mortgage…
Economic ReportTransparent 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 ArticlesI have to admit, when I first see a handbook written for consumers, my expectations for trade interest are low. This book surprised me. As you will see from the review, I felt that not…
Book ReviewThe synthetic diamond market continues to expand. Although dealers and manufacturers of natural diamonds express concerns that synthetics pose a risk to the market and as such should not be graded using the GIA diamond nomenclature, the reality…
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