Lab-Grown Diamond Update
Lab-grown diamonds are the focus of the industry and at Gemworld, we continue to get questions on all aspects from identification to pricing.
Featured ArticlesTreatments Applied to Garnet and Spinel
Spinel and garnet are one of the last holdouts in the modern-day growth of gemstone treatments. Besides fracture filling, these two groups of gems typically do not benefit from any standard processes of gemstone enhancement…
Featured ArticlesLab-Grown Diamond Market Report
Lab-grown was the talk of Vegas, with more booths than ever. This sector keeps growing in bridal but as more companies come in, will there be an oversupply? Prices continue to decrease, now with discounts in the 85-95% range from natural.
Featured ArticlesThe Value of Pearls: A Historical Review and Current Trends
Pearls are often reported as the oldest valuable gem known to humankind, and have been collected for at least 8,500 years
Featured ArticlesThe Artful Soul of Faust
The Artful Soul of Faust cameo collection carved by Dieter and Andreas Roth took over seven years to complete.
Featured ArticlesTucson Color Report
During interviews conducted the week after the AGTA and GJX shows closed, many dealers expressed their satisfaction with the strength of business conducted in Tucson. “It was a very good show, one of the best in years”
Featured ArticlesTreatment Disclosure and Other Notes from the Eastern Front
I devoted several pages to the subject of treatment disclosure and why it was not just a “swell idea,” but necessary to the very survival of the natural gem trade.
Featured ArticlesThe Supply Problem with Pearls
Pearl supply is down but demand is up, leaving U.S. dealers scrambling to get their hands on high-end inventory and paying a lot more for what is available.
Featured ArticlesThermal Testing of Gemstones
The use of silicon carbide (synthetic moissanite) led to the development of electrical conductivity testers of similar appearance, but which worked on different physical properties—electrical rather than thermal.
Featured ArticlesFitting A Jade Bangle
The bangle is the most popular jade jewel, but it is also the most complex to select. Next to all quality parameters, personal preferences, and budget, choosing the right size is of utmost importance. And when it comes to green and purple jadeite, perfect bangles are, as one would say, unheard of. Table 1 shows approximate retail values that currently apply for inferior to exceptional quality jade.
Featured Articles