- Opal var. Hyalite
- Small Cabinet, 8.6 x 6.5 x 4.4 cm
- Mina Etienne, San Luis Potosi, Mexico
Somewhat resembling a bird's nest, this specimen is highlighted by a layer of glassy and gemmy, colorless spheres of hyalite opal emplaced nicely on a matrix of undulating white chalcedony. Under fluorescent light the whole specimen iexhibits a rich lime to emerald green glow.