Colored Stones and Organic Materials
Beryl from Kaduna State, Nigeria
Green and Orangy Yellow Calcite from Pakistan
Citrine from Zambia
Emerald from Ethiopia
Emerald from Sumbawanga, Tanzania
Gold in Trondhjemite Matrix Rock
Hemimorphite from China
Update on Some Mogok Gem Mines and Markets
Rainbow Moonstone from Madagascar
Yellow Muscovite from Brazil
Blue Opal from Arizona Showing Play-Of-Color
Yellow Opal from West Africa
Quartz with Green Rutile Inclusions
Quartz from Tanzania with Red Epidote-Piedmontite Inclusions
Unusual Trapiche Sapphire
Stichtite-Dominated Intergrowths with Serpentinite from Tasmania
Zoisite from Pakistan
Pink to Purple Zoisite from Merelani, Tanzania
Synthetics and Simulants
Artistic Cutting of Russian Synthetic Moissanite
“True” Red Synthetic Spinel Grown By a “Pulled” Technique in Russia
Miscellaneous
Automated Colored Stone Cutting
To view the full section, download the PDF above.
Colored Stones and Organic Materials
Beryl from Kaduna State, Nigeria
Green and Orangy Yellow Calcite from Pakistan
Citrine from Zambia
Emerald from Ethiopia
Emerald from Sumbawanga, Tanzania
Gold in Trondhjemite Matrix Rock
Hemimorphite from China
Update on Some Mogok Gem Mines and Markets
Rainbow Moonstone from Madagascar
Yellow Muscovite from Brazil
Blue Opal from Arizona Showing Play-Of-Color
Yellow Opal from West Africa
Quartz with Green Rutile Inclusions
Quartz from Tanzania with Red Epidote-Piedmontite Inclusions
Unusual Trapiche Sapphire
Stichtite-Dominated Intergrowths with Serpentinite from Tasmania
Zoisite from Pakistan
Pink to Purple Zoisite from Merelani, Tanzania
Synthetics and Simulants
Artistic Cutting of Russian Synthetic Moissanite
“True” Red Synthetic Spinel Grown By a “Pulled” Technique in Russia
Miscellaneous
Automated Colored Stone Cutting
To view the full section, download the PDF above.
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