GCAL By Sarine's proprietary; radically rigorous 8X Ultimate Diamond Cut Grading standards assess round, marquise, pear, princess, oval and radiant cut diamonds. According to Avi Levy, New York-based ...

Pakistan Gems and Jewellery Development Company (PGJDC) has arranged a training course on Gemstone Identification and Grading at the Gem Exchange, Namak Mandi, in Peshawar on Tuesday. This two-week ...

Origin of recovery of gemstones -- Diamond Ruby and sapphire -- Emerald, aquamarine and other beryls -- Chrysoberyl and spinel -- Topaz and tourmaline -- Zircon, peridot and spodumene -- The garnets - ...

Intro -- Preface -- Editor biography -- Ashutosh Kumar Shukla -- List of contributors -- Chapter 1 Laser-induced breakdown spectroscopy for gemological testing -- 1.1 Introduction -- 1.2 What is LIBS ...