Dims: 3.85x1.53x0.92" (9.78x3.88x2.32cm)
Wt: 3.62oz (102.4g)
Level 670, La Sirena mine, Guanajuato, Mexico
This specimen displays calcite crystals against a pyrite druze backdrop. The calcite is colorless and transparent, but a finely striated surface (somewhat reminiscent of a cat's tail in shape) obscures the interior and creates a slightly milky appearance. While the overall crystal is round in cross section, there are several small attached rhombic calcite crystals with are transparent and display a vitreous luster. The pyrite druze consists of tiny cubic crystals with a slightly irridescent blue appearance.