Opal after clam
at-auction$ 20
- Locality
- Coober Pedy, Australia
- Minerals
- Opal
- Dimensions
- 2.5 x 2.5 x 2.3 cm
- Size class
- Thumbnail
- SID
- J990
Fossil bivalve that has bee replaced by precious opal. It's a partial shell, with parts of both halves present including the area of the hinge.
A play of color in reds, greens, yellows, and blues can be seen in areas when turned uner a light.