Spectroscopic study of Co-bearing spinel from Luc Yen (Vietnam)
Spectroscopic study of Co-bearing spinel from Luc Yen ( […]
Spinel: a gemstone on the rise (2010)
Talk given by Dr. Michael Krzemnicki in Hong Kong in 2010 about spinel, a gemstone increasingly in vogue. History, sources, origin determations, synthetics and treatments.
Eine Reise zu den Spinellen Tansanias
Eine Reise zu den Spinellen Tansanias. Gold’Or (2 […]
Spinel: bold, beautiful and affordable
Spinel: bold, beautiful and affordable. Jewellery News […]
Visit to Tanzanian spinel and corundum deposits (2010)
Presentation at Swiss Gemmological Society about trip to spinel and corundum deposits in Tanzania in October 2009 by Dr. Walter Balmer and Dr. Michael Krzemnicki
Vermehrt wieder flussmittelsynthetische Spinelle im Handel
Vermehrt wieder flussmittelsynthetische Spinelle im Han […]
Flux-grown synthetic red spinels on the market again
Flux-grown synthetic red spinels on the market again. T […]
Oriented inclusions in spinel from Madagascar
Oriented inclusions in spinel from Madagascar. Publishe […]