Dims: 1.4 x 1.3 x 1.1" (3.6 x 3.3 x 2.5 cm)
Wt: 28.1 g
San Juan del Rio, Mexico
The pitted opalite matrix of this specimen contains a few nodules of opal, but only one of these has not been badly weathered. It is also the only nodule that is made up of precious opal, and is exposed by a break on one side. The material shows no discernable form and is colorless, transparent, and quite clear. However, several colorful flashes of iridescence are evident when it is examined- these colors span the visible spectrum, though green and violet are predominant. Two small cracks permeate the material.