Cuprian Liddicoatite Tourmaline
Identifies 13 copper-bearing tourmalines, which have traditionally been assumed to be elbaite species, as liddicoatite.
Pyrope Garnet and Montana Sapphires Highlight Winter 2015 G&G
G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.
Multicoloured Bismuth-bearing Tourmaline from Lundazi, Zambia
Tourmalines from an alluvial deposit near Lundazi in Zambia consist of colour-zoned pink/colourless/yellow-green “watermelon” nodules.
Abstracts; Winter 2009
This article, from the Winter 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Spectral Differentiation Between Copper and Iron Colourants in Gem Tourmalines
The authors used Vis-NIR spectral measurements combined with LA-ICP-MS data to investigate the usefulness of absorption spectra.
Copper-bearing (Paraíba-type) tourmaline from Mozambique
Copper-bearing tourmaline from Mozambique was first recovered in 2001, but its Cu content was not recognised until 2003.