Dims: 3.0 x 2.6 x 2.1" (7.6 x 6.6 x 5.3 cm)
Wt: 5.90 oz. (167.5 g)
Charcas, San Luis Potosi, Mexico
This hand specimen is made up almost entirely of radiating Danburite prisms. These prisms reach lengths of up to approximately 1" (2.5 cm) and are generally in very good condition, as only a small number are damaged or broken. Their orthohrombic prismatic form is excellent- all have well-defined edges and striated but clean faces. They tend to be coated with a very fine druse (possibly of quartz) which hides their bright pearly luster and gives them a subtle sparkle. All are white or colorless and translucent to dimly transparent. They rest on a base that is likely made up of quartz, as it does not react to acid. This base is also colored white, and so is difficult to define and study.