With the advent of modern methods of non destructive/semi non destructive such as LA_ICP MS (Laser Ablation, Induction Coupled Plasma, Mass Spectrometer) the trace element chemistry of tourmaline has become much more accessible. Elements such as lead and the rare...
Copper is not a common chromophore in gemstones. A chromophore is some impurity or imperfection that causes the gemstone to have color. With the discovery that naturally occurring feldspar can be enhance threw the diffusion of copper into its matrix, it followed for...
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