Dims: 1.6 x 1.1 x 0.8" (4.1 x 2.8 x 2.0 cm)
Wt: 22.2 g
grown in Germany
This thumbnail specimen consists of an interesting formation of intergrown, pseudocubic Bismuth crystals. These crystals have been grown in a laboratory setting, and so are in excellent condition and show exceptional form- each is in the form of a "hopper crystal", a shape that occurs when the edges of a crystal grow more quickly than the faces do. There is a very thin oxide coating on the specimen, giving it a beautiful, colorful iridescence. Otherwise, the metal has a silvery-white coloration and a metallic luster. There is no host rock present, of course.