This large piece features a dense coating of black, lustrous, sharp Cassiterite crystals with minor clear Quartz on a rust-colored matrix from the famous Viloco Mine in Bolivia. The Cassiterite crystals are large, very sharp and mirror-like and contrast amazingly with the matrix. A very aesthetic piece with great color, luster, contrast and crystal formation. In excellent condition.

Location: Viloco Mine, Loayza Province, La Paz Department, Bolivia

Size: 8 x 2 x 9 cm