Spinel and Clinohumite micro crystals on a marble matrix.
From Sierra de Mijas, Málaga, Andalusia, Spain.
It is a difficult material to find because it appears in scattered outcrops throughout Sierra de Mijas, Mijas, Málaga, Andalusia, Spain, so you have to walk a lot to find areas that have not already been hunted by one of the many local collectors and merchants.