Graceful and fascinating dendritic growth of Silver that incredibly spans over 12 cm! in the matrix. The Silver reflects gorgeous rainbow iridescence when under just the right angle of light. The pinkish-white marble and the darker Copper-Nickel Arsenides provide just the right amount of contrast to raise the quality of this specimen to an even higher level. Really beautiful, and interesting, large slab that weighs 768 grams and is important from this historic mining district.