Cassiterite (twinned)

La Villeder, Le Roc-Saint-André, Vannes, Morbihan, Brittany/Bretagne  France (±1900)

Specimen size: 3.0 × 1.7 × 1.5 cm = 1.18” × 0.67” × 0.59”
Main crystal size: 2.0 × 1.3 cm = 0.79” × 0.51”