Verre artificiel changeant de couleur – Une pierre “extraterrestre”
Verre artificiel changeant de couleur – Une pierr […]
Moonstones and Co: a brief review of the feldspar group
Moonstones and Co: a brief review of the feldspar group […]
Serpentinite artefact resembling Libyan desert glass
Serpentinite artefact resembling Libyan desert glass. P […]
Gem-quality taafeeites and musgravites from Africa
Gem-quality taafeeites and musgravites from Africa. Pub […]
Transparent dumortierite and sapphirine from Tunduru, Tanzania
Transparent dumortierite and sapphirine from Tanz […]
The orientation and symmetry of light spots and asterism in rose quartz spheres from Madagascar
The orientation and symmetry of light spots and asteris […]
A Raman investigation of the amblygonite-montebrasite series
A Raman investigation of the amblygonite-montebrasite s […]
Uncommon minerals of gemstone quality from Tanzania
Uncommon minerals of gemstone quality from Tanzania. Pu […]
Gemmological properties and chemical composition of gemquality taaffeites and musgravites from Sri Lanka and Africa
Gemmological properties and chemical composition of gem […]
Asterism in beryl, aquamarine and emerald- an update
Asterism in beryl, aquamarine and emerald- an update. P […]