Tourmaline (etched)


Out of stock

A wonderfully blue partially gemmy heavily etched doubly terminated crystal with a small albite on one end.

Locality: Barra de Salinas, Minas Gerais Brazil

Composition: Being the tourmaline groups composition can vary widely the general chemical formula is X = Ca, Na, K, ▢ = vacancy. Y = Li, Mg, Fe2+, Mn2+, Zn, Al, Cr3+, V3+, Fe3+, Ti4+, vacancy. Z = Mg, Al, Fe3+, Cr3+, V. T = Si, Al, B.

Dimensions: 7.9 × 1 × .5 cm
SKU: Geo-3407 Categories: , ,
Dimensions: 7.9 × 1 × .5 cm