OPAL
Specimen opa-24
$ 25.00Dims: 2.6 x 1.7 x 1.3" (6.6 x 4.3 x 3.3 cm)
Wt: 1.79 oz. (50.7 g)
San Juan del Rio, Mexico
This hand specimen consists mostly of Opal, but most of it is common Opal, which is sometimes called "potch". There are, however, a few layers and rounded nodules of jelly Opal. These nodules are transparent and moderately clear, showing the slightly cloudy "opalescence" that is a hallmark. Its color ranges from colorlessness to the moderately deep orange of fire opal, and the largest nodule contains some subtle iridescence in one area. The common Opal has a deep red-brown color and is essentially opaque, and has been lacquered.