Padparadscha-like Fancy sapphires with Unstable Colours Colouration Mechanisms and Disclosure
Padparadscha-like Fancy sapphires with Unstable Colours […]
Unstable Colouration of Padparadscha-like Sapphires
Unstable Colouration of Padparadscha-like Sapphires. Pu […]
Yellow danburite from Namalulu, Tanzania, and Myanmar: Origin of Colour and Its Stability
Yellow danburite from Namalulu, Tanzania, and Myanmar: […]
Preserving the heritage of gemstone regions and resources worldwide: Future directions.
Preserving the heritage of gemstone regions and resourc […]
From classic inclusions to neutrons (2017)
Presentation by Dr. Michael S. Krzemnicki at 2017 Swiss Gemmological Society conference in Zermatt. Talk entitled ‘From classic inclusions to neutrons: A ‘fresh’ look at modern gemmology’.
Modern Doublets from Germany and India
Modern Doublets from Germany and India. Published in Jo […]
Saguaro Stone, a New Ornamental Material from Arizona (USA)
Saguaro Stone, a New Ornamental Material from Arizona ( […]
Colourless to near colourless diopside from Canada and Kenya
Colourless to near colourless diopside from Canada and […]
Alumosilicates: Andalusite, Kyanite, Sillimanite
Alumosilicates: Andalusite, Kyanite, Sillimanite. Publi […]