A fine copper specimen from the Turjinskii Mine of the Urals. Two diverging columns of sharp copper crystals rise up from the main shaft, which includes a very sharp copper octahedron. One column is capped by a horizontal, 1.4 cm spinel twin. All of the crystals have fine patina and luster. The piece is partly intergrown with native silver and a bit of quartz. Dating to the 1800s. Ex. St. Aubyn College, Richard Barstow and George Elling Collections.