Gem Knowledge

Gemstone of Passion: Padparadscha sapphire

Considered to be among the most beautiful of the corundum gems with its delicate colour, Padparadscha sapphire has recently hit…

Guy Lalous ACAM EG, summarises the state of making glass simulants of gems in the 16th Century, as well as…

First published in The Journal of Gemmology Vol.35/No.8, Robin Hansen FGA, gem curator at the Natural History Museum, London, takes us through…

Sarah Steele FGA DGA, visits a growing community of gem cutters in Newcastle who are quietly, but effectively, pushing boundaries.…

Cally Oldershaw FGA DGA describes the thrill of finding agate on the shores of Cornwall and reveals how these subtly-toned…

Guy Lalous ACAM EG summarises an article on inclusions in yellow danburite from Luc Yen, Vietnam, by Le Thi-Thu Huong,…

At New Scientist Live, Barbara Kolator B.Sc. M.Sc. FGA DGA EG met with Dr. Leon Barron, senior lecturer in Forensic Science…

December 2017: An Update from the Author No matter how much any information has been checked prior to publication, it…

Guy Lalous ACAM EG explores a detailed characterization of Baltic amber samples treated in experiments by Wang et al.(2014) in…