Transparent dumortierite and sapphirine from Tunduru, Tanzania
Transparent dumortierite and sapphirine from Tanz […]
Modern pearl farming for South Sea cultured pearls
Modern pearl farming for South Sea cultured pearls. Pub […]
A European gemmologist’s thoughts on jadeite jade
A European gemmologist’s thoughts on jadeite jade […]
A description of pearl farming with Pinctada maxima in South East Asia
A description of pearl farming with Pinctada maxima in […]
Pierres précieuses A à Z: émeraudes, rubis, saphirs et autres
Pierres précieuses A à Z: émeraudes, rubis, saphirs et […]
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 […]
A worked shell bead as an imitation of a Melo pearl
A worked shell bead as an imitation of a Melo pearl. Pu […]