National Rarities welcomes Sean Milliner as Gemology Manager, expanding Gem Lab capabilities and retail partner services.

LONDON, ENGLAND - OCTOBER 22: A rare ruby and diamond necklace and ruby earings from the 19th Century are displayed at Sotheby's in London. (Photo by Peter Macdiarmid/Getty Images) A teacher I had at ...

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 - ...

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 ...

Accurate gemstone classification is critical in gemology for authentication and identification. This study presents a novel one-class classifier using self-organizing maps (SOMs), combined with Monte ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

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 ...