- Calcite and Quartz After Danburite
- Small Cabinet, 8.8 x 6.8 x 5.6 cm
- Charcas, San Luis Potosi, Mexico
- Ex. Richard Heck
This is a fascinating specimen of multiple generations of growths. A druse of sparkling white quartz has pseudomorphed what once was danburite crystals, to 6 cm in length. Perched aesthetically on the quartz are three beautifully formed scalenohedrons of lustrous and translucent, white calcite, the longest of which is 4 cm. The quartz druse fluoresces a dull orange while the calcite crystals fluoresce a bright orange. Unusual and lovely!