Dendritic opal from Utah showcases finely detailed splays of black dendrites in a caramel - colored common opal.  Nature at its finest. This material will make magnificent scenic cabs.

Origin:  Oregon

Dimensions: 2.5" x 2.25" and approximately 7.7 mm thick on the top tapering to 4.2 mm on the bottom.  Weight = 39 grams. 

Shown wet.  Not polished. Known flaws are shown as white lines in the last picture frame.