Last fall, Gemworld began the Lab Grown Diamond Price Index in coordination with a new trading platform for LGDs founded by Jerry Ehrenwald, former director, IGI Laboratory in New York. www.lgdex.org. When the first price list…
*Lab-Grown Diamond Price IndexClarity enhancement; probably the oldest gem treatment method...
*Gem Focus & Market Pulse (Free Subscriber)The diamond market around the world, and especially in North America, has entered unknown waters as far as accurately predicting what’s coming down the pipeline. Diamond “experts” continually weigh in with their predications of what…
Diamond MarketColor modification of ruby and sapphire by heat treatment processes has a long tradition in the gemstone industry. First written reports by Bhojarajah and Al Beruni date back to the 11th century (see Hughes, 2017),while…
Featured ArticlesSometimes the most basic of questions is the best question. For example, why do markets exist? Most everyone has heard about “supply and demand.” To be blunt, one should view the relationship between supply…
The Appraiser's NotebookIn Asia, jewelers report improving sales as consumers spend on luxury. In the USA, cautious mood greets traders as more markets emerge from COVID-19 closures. A range of colors are expected to see good demand…
Colored Stone MarketTourmaline is one of the most popular and complex gemstones and has a long history. Due to its rich chemistry and growth conditions, it comes not only in many different colors but also in unusual…
Market TrendsSpodumene is almost exclusively a pegmatitic mineral of the pyroxene group that forms in monoclinic system with a chemical formula of LiAlSi2O6. Its hardness is 6.5 to 7 on the Mohs’ scale and displays perfect prismatic cleavage. Transparent and colored varieties show strong pleochroism. Strangely, the name spodumene means “ash-colored” in Greek referring to the dull and colorless examples when it was first named in the second half of the 19th century.
*Gem Focus & Market Pulse (Free Subscriber)Engraved Gems. Timeless Seals and Canvases of Ancient Scenes.
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