The historic ‘Sleeping Lion Pearl’, a natural Blister and not a Pearl
Recently, the Swiss Gemmological Institute SSEF had the opportunity to investigate an impressive natural nacreous formation with documented provenance dating back to the late 18th century, named the ‘Sleeping Lion Pearl’ due to its baroque shape that is reminiscent of a lion.
New frontiers in pearl analysis: Age dating, DNA fingerprinting and novel radiographic methods (2019)
Presentation by Dr. Michael S. Krzemnicki and Jean-Pierre Chalain at the Pearl Symposium in Bahrain in November 2019.
DNA fingerprinting of precious corals an pearls (2019)
Presentation by Dr. Laurent E. Cartier at the International Gemmological Conference (IGC) in Nantes (France) in August 2019.
DNA fingerprinting of precious corals and pearls
Presentation by Dr. Laurent E. Cartier at the Internati […]
Neutron Radiography and Tomography: A New Approach to Visualize the Internal Structures of Pearls
Neutron Radiography and Tomography: A New Approach to V […]
DNA Fingerprinting of Pearls, Corals and Ivory: A Brief Review of Applications in Gemmology
DNA Fingerprinting of Pearls, Corals and Ivory: A Brief […]
Radiocarbon Age Dating of 1,000-Year-Old Pearls from the Cirebon Shipwreck (Java, Indonesia)
Radiocarbon Age Dating of 1,000-Year-Old Pearls from th […]
Simultaneous X-ray Radiography, Phase-Contrast and Darkfield Imaging to Separate Natural from Cultured Pearls
Simultaneous X-ray Radiography, Phase-Contrast and Dark […]