GJ Town India

GSI, one of the largest gemological organizations in the world, has opened a new laboratory in Hong Kong. The new facility will serve its international customer base and will offer easy and complete access to GSI’s numerous laboratory services. GSI's Hong Kong office will offer a variety of services from grading loose diamonds and jewelry to screening and testing jewelry for undisclosed lab grown diamonds. "Hong Kong is a major hub for the international diamond and jewelry Industry. With the opening of GSI Hong Kong, GSI has its laboratories in every major diamond and jewelry center across the globe.” said Debbie Azar, GSI President & Co-Founder. GSI’s new facility is located at Kaiser Estate Phase 1, 37-45 Man Yue Street Hunghom KL Hong Kong Ste. A3 (5th floor), +852-21229378.

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 ...