- Quartz Encrusting Danburite With Calcite
- Small Cabinet, 9.2 x 8.8 x 8.5 cm
- Charcas, San Luis Potosi, Mexico
- Ex. Richard Heck
Two, very large crystals in parallel growth of danburite, to 10 cm in length, have been thickly encrusted by sparkling drusy quartz. The front side, which is a white quartz druse, is different from the back side which has a sparkling, colorless druse of calcite. Overall a very geometric and unusual specimen.