Taaffeite

Introduction Taaffeite, (pronounced TAH-fite), is a mineral species crystallizing in the hexagonal system with the formula Mg3Al8BeO16. It is often included on a list of the rarest gemstones in the world. For a period of time, only a handful of stones existed. Additional discoveries …

Gem Market Pulse – August 2016

Latest on Colored Stone Market Consumers remain cautious about spending on luxury goods, including jewelry, as the presidential campaign exploits antiestablishment angsts among America’s middle class. Gemworld’s Vice President Stuart Robertson reported in his last article in the GemGuide that the Las Vegas Show reflected this mood as was predicted. …

Pearls – Freshwater or Saltwater?

The Pearl market in Australia has been quite strong for a number of years. Jewelers usually stock pearls as supplementary products to gemstone set jewelry, however, in the last ten years or so, specialized pearl retailers have made an appearance …

Gem Market Pulse – March 2015

Demand for fancy diamonds improved sharply …prices in several fancy categories are moving in the opposite direction February brought a slight decline in the consumer confidence index. However, conditions remain fairly optimistic in the North American market as lower gas …

Colored Stone Market

This past year revealed more signs that the industry is adjusting to the new dynamic that emerged as the economy recovered from the recession. Colored stone dealers are optimistic heading into the holiday season. Increasing prices and good demand are …

Diamond Market

Vegas was all about fancy color diamonds. Demand for melee and single stones in color is strong. Colorless diamond prices are stable despite rising cost of rough. Manufacturers are angry at mining companies for the high cost of rough causing …

Diamond Market

Synthetic and treated diamond melee continues to plague the industry. Auctions continue to amaze with record prices on diamonds. Mixed US markets heading into the holidays. Belgium exports rise but US is third in world consumption. The talk continues to …

Diamond Market

Diamond markets remain soft among some uncertainty heading into new year. Overall prices declined by about 15% for one carat diamonds in 2011. DeBeers announces synthetic diamond tester for use with large parcels of melee. This past year has been …

Colored Stone Market

More encouraging signs for the North American gem and jewelry trade are surfacing this time in recent reports issued in Hong Kong and India. In each, market growth that is attributed to improving consumption in the US is noted. Jewellery …

The Colors of Corundum

Transparent colored gemstones are loved for their beautiful colors. How they absorb the visible light that passes through them determines their color (Figure 1). The study of light absorption by materials is called spectroscopy. Because the rainbow array of colors …

Gem-A Conference 2012

London played host to a number of impressive events this year and the Gem-A 2012 conference with record attendance and delegates from over 20 countries, was no exception. Held in conjunction with the annual graduation ceremony, this is often the …

Ion Engraving on Diamonds

As we entered the new millennium, DeBeers announced that they had technology to invisibly mark the table of a diamond with anything from text to photographs. Using this focused ion beam technology, they branded and sold the ‘Millennium’ diamond. These …

World of Gems Conference III

2012 was a great year for conferences. Gemworld was pleased to contribute to that with our third conference. Following a tradition that we started in 2008, every two years we are host to our own international gemological conference. The conference …

Evaluating and Pricing Alexandrite

Interest in certain phenomenal gems could be enhanced by promoting the unique characteristics that materials in this category possess to the broader market. In general, the global market has significant potential to grow as emerging economies see more people join …