Galena and Sphalerite, Gjurdurska Mine, Madan District, Bulgaria, Mined c. 2012, Miniature 3.3 x 5.0 x 5.5 cm, $65. Online Online June 12.
NSMW13158
Highly complex Spinel Law twin on sphalerite matrix. Bright reflections dependent on orientation. In excellent condition.