The Beryl Group – an Overview
The Beryl Group – an Overview. Published in Journal of […]
Gemmological investigations on pearls and emeralds using neutron imaging
Gemmological investigations on pearls and emeralds usin […]
Emeralds and the saga of cleaning and filling fissures
Emeralds and the saga of cleaning and filling fissures. […]
Case study on an emerald bead: Is it from the ancient mines in Egypt or not?
Case study on an emerald bead: Is it from the ancient m […]
Colourful Treasures of Nature: Ruby, Sapphire, Emerald & Pearls (2012)
2012 Christie’s expert lecture by Dr. Michael Krzemnicki on exceptional coloured gemstones and natural pearls.
Asterism in beryl, aquamarine and emerald- an update
Asterism in beryl, aquamarine and emerald- an update. P […]
Der Binntal Smaragd als Juwel
Der Binntal Smaragd als Juwel. Published in Schweizer S […]
Les nouvelles mines d’émeraudes de la Pita (Colombie)
Les nouvelles mines d’émeraudes de la Pita (Colom […]
Emerald treatments: their effects and how to recognize them
Emerald treatments: their effects and how to recognize […]