High energy radiation, likely gamma radiation, causes carbon atoms to be expelled from their lattice site into an interstitial site and this leaves a so-called “carbon vacancy” or simply “vacancy.” This vacancy of neutral charge…
Featured ArticlesThe general observation regarding the diamond market is that prices continue to edge up and are firm, while the trade and consumers remain cautious. There is a growing disconnect between the wholesale market and key…
Diamond MarketThe colored stone market is currently positioned for growth this year. Dealers have reported strong sales results at each of the major tests to date: Tucson, Hong Kong and Basel. Inspired by the trend, market…
Colored Stone MarketBusiness was strong for many of the 450 exhibitors at the fair this year which ran from March 19-22. Of great concern and conversation, was the crisis in Ukraine with Russia annexing Crimea at the…
Featured ArticlesThe colored stone market continues to move in a positive direction. Dealers have reported strong sales results at each of the major tests to date: Tucson, Hong Kong and Basel. Inspired by the trend, market…
*Gem Focus & Market Pulse (Free Subscriber)In the past, non-play of color orange to red “fire opal” was best known from its sources in Mexico. While Australian opal varieties such as black opal, white, opal, and crystal opal are from sedimentary…
Gem NotesIt was a good year for diamonds with stronger than expected demand and higher prices overall. However, business remains mixed for the independent jeweler with ups and downs throughout the year. Tight money from banks…
Diamond MarketAlthough zoisite is best known for its blue-violet variety tanzanite, other colors of zoisite exist in nature. A number of dealers carry rare green, pink and yellow varieties alongside tanzanite. Most buyers are unfamiliar with…
Featured ArticlesDealers are optimistic after successful Tucson show. No single gem stood out this year. Instead buyers were focused on fine spinel, beryl, tourmaline, zircon, agate and unusual gems. More American buyers turned out this year…
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