Marble-hosted ruby deposits of the Morogoro Region, Tanzania
Marble-hosted ruby deposits of the Morogoro Region, Tan […]
Sapphire from Andranondambo, Madagascar
first published in Facette 22 (February 2016) In 2 […]
Origin of gem corundum in calcite marble: The Revelstoke occurrence in the Canadian Cordillera of British Columbia
Origin of gem corundum in calcite marble: The Revelstok […]
Nail-head Spicules as Inclusions in Chrysoberyl from Myanmar
Nail-head Spicules as Inclusions in Chrysoberyl from My […]
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 […]
Origin determination of gemstones (2014)
Presentation on origin determination of coloured gemstones by Dr. Michael Krzemnicki at 2014 Scottish Gemmological Conference.
Kashmir sapphire origin determination: potential and limitations (2012)
Presentation by Dr. Michael Krzemnicki at 2012 SGG conference in Switzerland.
New Tanzania mine uncovers source of exceptional rubies
New Tanzania mine uncovers source of exceptional rubies […]
Vanadium-bearing gem-quality tourmalines from Madagascar
Vanadium-bearing gem-quality tourmalines from Madagasca […]