21CXX11: Elongated, doubly terminated prismatic Staurolite crystal with well-defined faces and edges of deep dark colors and with some Muscovite on the crystal terminations. This floater specimen, of high quality for the deposit, a Spanish classic.
It comes from the Carles Curto collection of duplicates (number 1971.12), whose label and computer file we will send to the buyer.
Montejo de la Sierra, Comarca Sierra Norte, Community of Madrid  Spain

Specimen size: 5.0 × 1.7 × 1.2 cm = 1.97” × 0.67” × 0.47”