GJ Town India

Studies methods of detecting low-temperature heated rubies from Mozambique Since their discovery in early 2009, the ruby deposits near Montepuez in Mozambique have produced an impressive number of exceptional-quality stones, including iconic gems such as the Rhino Ruby (22.04 cts), the Scarlet Drop (15.95 cts) and the Eyes of the Dragon (a pair of rubies pair weighing 11.23 cts and 10.70 cts), all of which were analysed by the Swiss Gemmological Institute SSEF. But from the very beginning, there has been evidence in the market of lower-quality rubies from Mozambique that have been heated with or without a flux (borax), resulting in healed fissures with residue, and in some cases heavily-fractured material that has been lead-glass filled. In more recent years, an increasing number of fine quality rubies from Mozambique have come onto the market, after having undergone so-called "low-temperature heating" (below 1000 °C). Presumably, the aim of this treatment ...

Testing for pearls, gemstones and jewellery items at September HK Fair Danat is raring to introduce its services to the gemstone and jewellery (GJ) industry during the September Fair, “The June Fair was Danat’s first official participation in an international exhibition. We have set a personal benchmark, which is something the trade now expects from Danat in all future participations,” Danat CEO Kenneth Scarratt says. “For the September Fair, we will build upon that and provide on-site testing for pearls, gemstones and jewellery items. We will be hosting lectures presented by Danat’s Field Gemmologists highlighting recent gemmological expeditions, and we will also be showcasing items of jewellery, which we believe will be a big attraction.” Meanwhile, the Gemmological Association of Hong Kong (GAHK) says it is co-organising the “Launching of standard methods for testing Fei Cui for Hong Kong – Chinese Version and academic conference of GAHK 2018 – coloured gemsto...