Reversible Twinning in Neodymium Pentaphosphate
Application of slight pressure perpendicular to the twinning planes reveals the unusual property of this synthetic gem.
Plastic Amber Imitation in a Rosary
The Evolution of Chinese Jade Carving Craftsmanship
Explores the art form of jade carving in China across five periods from the late Neolithic Age to the present day.
Observations on GE-Processed Diamonds: A Photographic Record
Lepidolite in Copper-Bearing Tourmaline
Hollandite in Amethyst
Gems Keep Giving
Derek Katzenbach: Faceter, Gem Artist, Custom Jeweler
Fall 2016 Observations Cvd Grown Synthetic Diamonds Review1
Exceptional Gemstone Acquisitions by the Kreis Family
Diffusion-Induced Blue Spinel-Like Layer on Natural Sapphire
