Mineral: | Espinela
| Fórmula química: | MgAl2O4 | Tamaño: | | Peso: | | Transparencia: | translúcido - transparente | Número de piezas: | | Origen: | Laggala, Distrito de Matale, Provincia de Central , Sri Lanka | This blue spinel crystal seems to be a pseudomorph and is except one tiny edge fully crystallized. One side shows a small fracture plane but all other faces are terminated. The crystal seems to have an hexagonal habit, but a closer look at the angles tell you different, so it is unclear why the spinel finally crystallized in this shape. Under the Chelsea-Filter the crystal is slightly red, so it may contain some cobalt. Very unusual spinel found many years ago in Sri Lanka.
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